Help with chemical formula?
Q. I want to write the chemical formula of Beryllium Chloride. I know the answer is BeCl2, but what I don't understand is how do you know how many chlorine atoms to put in the formula? Lithium Bromide is LiBr, so why is only 1 atom from lithium and 1 atom from bromide needed, whereas in Beryllium Chloride, we need 2 chloride atoms? ok then again what do you mean by a stable atom?
Asked by travel - Sat May 3 02:11:38 2008 - - 4 Answers - 0 Comments
A. ok the rule of the periodic table and making binary compounds is switching the valences of your elements on the periodic table Be is in the second column witch means the outer shell has a valency of 2(this means that in order for Be to become stable it needs 2 more electrons. while Cl is in row 17 and need 1 e;electrons to be stable. when your making binary compounds you switch the valency's with each other so Be+2 + Cl-1 = Be1Cl2 and if theres a 1 you automatically dont need to show it. another example magnesium sulfide Mg+2 + S-3 = Mg3S2 LI and Br both have a valency of 1 so when they cross its Li1Br1
Answered by unknown - Sat May 3 02:24:58 2008
Q. I want to write the chemical formula of Beryllium Chloride. I know the answer is BeCl2, but what I don't understand is how do you know how many chlorine atoms to put in the formula? Lithium Bromide is LiBr, so why is only 1 atom from lithium and 1 atom from bromide needed, whereas in Beryllium Chloride, we need 2 chloride atoms? ok then again what do you mean by a stable atom?
Asked by travel - Sat May 3 02:11:38 2008 - - 4 Answers - 0 Comments
A. ok the rule of the periodic table and making binary compounds is switching the valences of your elements on the periodic table Be is in the second column witch means the outer shell has a valency of 2(this means that in order for Be to become stable it needs 2 more electrons. while Cl is in row 17 and need 1 e;electrons to be stable. when your making binary compounds you switch the valency's with each other so Be+2 + Cl-1 = Be1Cl2 and if theres a 1 you automatically dont need to show it. another example magnesium sulfide Mg+2 + S-3 = Mg3S2 LI and Br both have a valency of 1 so when they cross its Li1Br1
Answered by unknown - Sat May 3 02:24:58 2008
Fort the following What are the symbols, formulas, and names of....?
Q. Cation: Anion: Name: ammonium sulfate Formula: Cation: Anion: Name: Formula:PbF2 Cation: Anion: Name: lithium bromide Formula: Cation: Anion: Name: Formula: Na2CO3 Cation:Mg2+ Anion: PO43- Name: Formula:
Asked by Shorty - Thu Feb 21 21:11:54 2008 - - 2 Answers - 0 Comments
A. what i put in the brackets after the cations and anions are the charges.. Cation: NH4 (+) Anion: SO4 (-2) Name: ammonium sulfate Formula: (NH4)2SO4 Cation: Pb (+2) Anion: F (-) Name: lead (II) Fluoride Formula:PbF2 Cation: Li (+) Anion: Br (-) Name: lithium bromide Formula: LiBr Cation: Na (+) Anion: CO3 (-2) Name: sodium carbonate Formula: Na2CO3 Cation:Mg2+ Anion: PO43- Name: magnesium phosphate Formula: Mg3(PO4)2
Answered by cyanocobalamine - Thu Feb 21 21:16:31 2008
Q. Cation: Anion: Name: ammonium sulfate Formula: Cation: Anion: Name: Formula:PbF2 Cation: Anion: Name: lithium bromide Formula: Cation: Anion: Name: Formula: Na2CO3 Cation:Mg2+ Anion: PO43- Name: Formula:
Asked by Shorty - Thu Feb 21 21:11:54 2008 - - 2 Answers - 0 Comments
A. what i put in the brackets after the cations and anions are the charges.. Cation: NH4 (+) Anion: SO4 (-2) Name: ammonium sulfate Formula: (NH4)2SO4 Cation: Pb (+2) Anion: F (-) Name: lead (II) Fluoride Formula:PbF2 Cation: Li (+) Anion: Br (-) Name: lithium bromide Formula: LiBr Cation: Na (+) Anion: CO3 (-2) Name: sodium carbonate Formula: Na2CO3 Cation:Mg2+ Anion: PO43- Name: magnesium phosphate Formula: Mg3(PO4)2
Answered by cyanocobalamine - Thu Feb 21 21:16:31 2008
Which of the following statements correctly describes the substance with the formula LiBr?
Q. A. Molecules of lithium bromide contain one atom of lithium and one atom of bromine. B.There is a one-to-one ratio of lithium ions to bromide ions. C.Lithium bromide is a molecular compound. D.Lithium bromide is a polyatomic ion.
Asked by Kelly - Wed Aug 5 22:00:57 2009 - - 1 Answers - 0 Comments
A. A, B and C sound okay to me. D is wrong because LiBr is not an ion: there's no net charge.
Answered by sevenletters4me - Wed Aug 5 22:29:44 2009
Q. A. Molecules of lithium bromide contain one atom of lithium and one atom of bromine. B.There is a one-to-one ratio of lithium ions to bromide ions. C.Lithium bromide is a molecular compound. D.Lithium bromide is a polyatomic ion.
Asked by Kelly - Wed Aug 5 22:00:57 2009 - - 1 Answers - 0 Comments
A. A, B and C sound okay to me. D is wrong because LiBr is not an ion: there's no net charge.
Answered by sevenletters4me - Wed Aug 5 22:29:44 2009
What is the correct formula for calcium nitrite?How are ions formed?
Q. Ca2(NO2) What is the correct formula for potassium iodide? pi ki p2I K2I2 Ca(NO2)2 Ca3(NO2)2 Ca(NO2) What is the correct formula for boron fluoride? BF BF3 BF2 B2F3 B3F What is the correct formula for lithium bromide? i2Br LiBr Li3Br2 Li2Br2 Ca2(NO2) 1st one multiple choice Ca(NO2)2 Ca3(NO2)2 Ca(NO2) BF BF32nd one BF2 B2F3 B3F PI 3rd one KI P2I K2I2
Asked by jennifer f - Mon Aug 4 12:24:27 2008 - - 2 Answers - 0 Comments
A. Potassium Iodide: Ki Calcium nitrite: Ca(NO2)2 Boron Fluoride: BF3 Lithium bromide: LiBr Generally, when a salt is dissolved in water, the metal and nonmetal ions separate from each other and float freely in the solution.
Answered by betsy green - Mon Aug 4 12:50:18 2008
Q. Ca2(NO2) What is the correct formula for potassium iodide? pi ki p2I K2I2 Ca(NO2)2 Ca3(NO2)2 Ca(NO2) What is the correct formula for boron fluoride? BF BF3 BF2 B2F3 B3F What is the correct formula for lithium bromide? i2Br LiBr Li3Br2 Li2Br2 Ca2(NO2) 1st one multiple choice Ca(NO2)2 Ca3(NO2)2 Ca(NO2) BF BF32nd one BF2 B2F3 B3F PI 3rd one KI P2I K2I2
Asked by jennifer f - Mon Aug 4 12:24:27 2008 - - 2 Answers - 0 Comments
A. Potassium Iodide: Ki Calcium nitrite: Ca(NO2)2 Boron Fluoride: BF3 Lithium bromide: LiBr Generally, when a salt is dissolved in water, the metal and nonmetal ions separate from each other and float freely in the solution.
Answered by betsy green - Mon Aug 4 12:50:18 2008
I need help im chemistry class. Please Correct the formula of each of the compounds?
Q. Potassium Iodide, Barium chloride, lithium Bromide, Iron(III) sulfate, Chrominum(III) sulfide, Calcium Carbonate, sodium acetate, cobalt(II) fluoride, sodium phosphide, tin(IV) oxide, gold(III) bromide, copper(II) iodide, stromium chloride, lithium acetate, magnbesium hydroxide, nickel(II) nitrate, silver oxide, zinc chloride, magnesium phospate. Thanks you for taking the time doing these.
Asked by truckin_90 - Wed Oct 4 13:32:41 2006 - - 3 Answers - 0 Comments
A. potassium iodide: KI barium chloride: BaCl2 lithium bromide: LiBr iron III sulfate: Fe2(SO4)3 chromium sulfide: Cr2S3 Calcium carbonate: CaCO3 Sodium acetate: NaCH3COO Cobalt II fluoride: CoF2 Sodium phosphide: Na3P tin IV oxide: SnO2 gold III bromide: AuBr3 copper II oxide: CuO Strontium chloride: SrCl2 Lithium acetate: LeCH3COO Magnesium hydroxide: Mg(OH)2 nickel II nitrate: Ni(NO3)2 Silver oxide: Ag2O is most likely, AgO is possible zink chloride: ZnCl2 Magnesium phosphate: Mg3(PO4)2
Answered by yupchagee - Wed Oct 4 13:46:44 2006
Q. Potassium Iodide, Barium chloride, lithium Bromide, Iron(III) sulfate, Chrominum(III) sulfide, Calcium Carbonate, sodium acetate, cobalt(II) fluoride, sodium phosphide, tin(IV) oxide, gold(III) bromide, copper(II) iodide, stromium chloride, lithium acetate, magnbesium hydroxide, nickel(II) nitrate, silver oxide, zinc chloride, magnesium phospate. Thanks you for taking the time doing these.
Asked by truckin_90 - Wed Oct 4 13:32:41 2006 - - 3 Answers - 0 Comments
A. potassium iodide: KI barium chloride: BaCl2 lithium bromide: LiBr iron III sulfate: Fe2(SO4)3 chromium sulfide: Cr2S3 Calcium carbonate: CaCO3 Sodium acetate: NaCH3COO Cobalt II fluoride: CoF2 Sodium phosphide: Na3P tin IV oxide: SnO2 gold III bromide: AuBr3 copper II oxide: CuO Strontium chloride: SrCl2 Lithium acetate: LeCH3COO Magnesium hydroxide: Mg(OH)2 nickel II nitrate: Ni(NO3)2 Silver oxide: Ag2O is most likely, AgO is possible zink chloride: ZnCl2 Magnesium phosphate: Mg3(PO4)2
Answered by yupchagee - Wed Oct 4 13:46:44 2006
identify the charges of the ions in each ionic compound listed below. Then write the formula for each compound
Q. sodium bromide lithium oxide magnesium sulfide aluminum fluoride potassium nitrate ammonium chloride How did you know how many of each ion to write in the formula?
Asked by Sam M - Thu Feb 28 08:25:24 2008 - - 4 Answers - 0 Comments
A. Charges are in brackets: Na(+) + Br(-) --->NaBr Li(-) + O(2-) ---> Li2O Mg(2+) + S(2-) ---> MgS Al(3+) + F(-) ---> AlF3 K(+) +NO3 (-) ---> KNO3 NH4(+) + Cl(-) ---> NH4Cl to work out how many of each ion you need to kind the lowest common denominator of the 2 ions' charges then cross multiply (find the numbers so the charges cancel out basically)
Answered by poorboy_208 - Thu Feb 28 08:35:49 2008
Q. sodium bromide lithium oxide magnesium sulfide aluminum fluoride potassium nitrate ammonium chloride How did you know how many of each ion to write in the formula?
Asked by Sam M - Thu Feb 28 08:25:24 2008 - - 4 Answers - 0 Comments
A. Charges are in brackets: Na(+) + Br(-) --->NaBr Li(-) + O(2-) ---> Li2O Mg(2+) + S(2-) ---> MgS Al(3+) + F(-) ---> AlF3 K(+) +NO3 (-) ---> KNO3 NH4(+) + Cl(-) ---> NH4Cl to work out how many of each ion you need to kind the lowest common denominator of the 2 ions' charges then cross multiply (find the numbers so the charges cancel out basically)
Answered by poorboy_208 - Thu Feb 28 08:35:49 2008
Check name to formula and formula to name?
Q. Yes its long but am i doing this right? the numbers and (+ or -) are supposed to be in superscript. if you see any wrong can you tell me why/how to fix it? even a partial answer is helpful Magnesium oxide = MgO lithium bromide = LiBr calcium nitride = Ca3-N2+ aluminum sulfide = Al2-S3+ potassium iodide = KI strontium chloride = Sr-Cl2+ sodium sulfide = Na2-S+ radium bromide = Ra-Br2+ magnesium sulfide = MgS aluminum nitride = AlN cesium sulfide = Cs2-S+ potassium chloride = KCl strontium phosphide = Sr3-P2+ barium iodide = Ba-I2+ sodium fluoride = S-2+ calcium bromide = Ca-Br2+ beryllium oxide = BeO strontium sulfide = SrS boron fluoride = B-F3+ aluminum phosphide = AlP rubidium oxide = Rb2-O+ calcium iodide = Ca-I2+ cesium oxide = Cs2-O+ [cont.]
Asked by Lala A - Tue Dec 30 22:09:49 2008 - - 1 Answers - 0 Comments
A. Most are correct Sodium fluoride is NaF Sodium oxide is Na2O Beryllium Bromide is BeBr2 Mercury(I) sulfide is Hg2S I'm not sure why you have the pluses and minuses in the formulae. All these are neutral compounds.
Answered by neillup - Tue Dec 30 23:47:40 2008
Q. Yes its long but am i doing this right? the numbers and (+ or -) are supposed to be in superscript. if you see any wrong can you tell me why/how to fix it? even a partial answer is helpful Magnesium oxide = MgO lithium bromide = LiBr calcium nitride = Ca3-N2+ aluminum sulfide = Al2-S3+ potassium iodide = KI strontium chloride = Sr-Cl2+ sodium sulfide = Na2-S+ radium bromide = Ra-Br2+ magnesium sulfide = MgS aluminum nitride = AlN cesium sulfide = Cs2-S+ potassium chloride = KCl strontium phosphide = Sr3-P2+ barium iodide = Ba-I2+ sodium fluoride = S-2+ calcium bromide = Ca-Br2+ beryllium oxide = BeO strontium sulfide = SrS boron fluoride = B-F3+ aluminum phosphide = AlP rubidium oxide = Rb2-O+ calcium iodide = Ca-I2+ cesium oxide = Cs2-O+ [cont.]
Asked by Lala A - Tue Dec 30 22:09:49 2008 - - 1 Answers - 0 Comments
A. Most are correct Sodium fluoride is NaF Sodium oxide is Na2O Beryllium Bromide is BeBr2 Mercury(I) sulfide is Hg2S I'm not sure why you have the pluses and minuses in the formulae. All these are neutral compounds.
Answered by neillup - Tue Dec 30 23:47:40 2008
Science HOMEWoRK!?
Q. I need help! okay here it is Write the Correct formula... magnesium oxide lithium bromide calcium nitride aluminum sulfide potassium iodide
Asked by lil.redxoxo - Tue Oct 23 21:50:22 2007 - - 7 Answers - 0 Comments
A. MgO LiBr Ca3N2 Al2S3 KI
Answered by science teacher - Tue Oct 23 21:57:01 2007
Q. I need help! okay here it is Write the Correct formula... magnesium oxide lithium bromide calcium nitride aluminum sulfide potassium iodide
Asked by lil.redxoxo - Tue Oct 23 21:50:22 2007 - - 7 Answers - 0 Comments
A. MgO LiBr Ca3N2 Al2S3 KI
Answered by science teacher - Tue Oct 23 21:57:01 2007
Physical Science questions help!?
Q. 1.In an electron dot diagram, the symbol for an element is used to represent ___. the nucleus and valence electrons. the nucleus and all non-valence electrons. the nucleus and all electrons. the nucleus. 2.Which of the following statements correctly describes the substance with the formula LiBr? A-Molecules of lithium bromide contain one atom of lithium and one atom of bromine. B-There is a one-to-one ratio of lithium ions to bromide ions. C-Lithium bromide is a molecular compound. D- Lithium bromide is a polyatomic ion. Which statement best describes the properties of sodium chloride? A-Sodium chloride is a malleable solid. B-Solid sodium chloride is a good conductor of electric… [cont.]
Asked by Kia - Fri Aug 7 14:09:58 2009 - - 1 Answers - 0 Comments
Q. 1.In an electron dot diagram, the symbol for an element is used to represent ___. the nucleus and valence electrons. the nucleus and all non-valence electrons. the nucleus and all electrons. the nucleus. 2.Which of the following statements correctly describes the substance with the formula LiBr? A-Molecules of lithium bromide contain one atom of lithium and one atom of bromine. B-There is a one-to-one ratio of lithium ions to bromide ions. C-Lithium bromide is a molecular compound. D- Lithium bromide is a polyatomic ion. Which statement best describes the properties of sodium chloride? A-Sodium chloride is a malleable solid. B-Solid sodium chloride is a good conductor of electric… [cont.]
Asked by Kia - Fri Aug 7 14:09:58 2009 - - 1 Answers - 0 Comments
Which statement best describes the properties of sodium chloride?
Q. 1.In an electron dot diagram, the symbol for an element is used to represent ___. the nucleus and valence electrons. the nucleus and all non-valence electrons. the nucleus and all electrons. the nucleus. 2.Which of the following statements correctly describes the substance with the formula LiBr? A-Molecules of lithium bromide contain one atom of lithium and one atom of bromine. B-There is a one-to-one ratio of lithium ions to bromide ions. C-Lithium bromide is a molecular compound. D- Lithium bromide is a polyatomic ion. Which statement best describes the properties of sodium chloride? A-Sodium chloride is a malleable solid. B-Solid sodium chloride is a good conductor of electric current. C-Sodium chloride has a low melting… [cont.]
Asked by Kia - Fri Aug 7 14:22:57 2009 - - 2 Answers - 0 Comments
Q. 1.In an electron dot diagram, the symbol for an element is used to represent ___. the nucleus and valence electrons. the nucleus and all non-valence electrons. the nucleus and all electrons. the nucleus. 2.Which of the following statements correctly describes the substance with the formula LiBr? A-Molecules of lithium bromide contain one atom of lithium and one atom of bromine. B-There is a one-to-one ratio of lithium ions to bromide ions. C-Lithium bromide is a molecular compound. D- Lithium bromide is a polyatomic ion. Which statement best describes the properties of sodium chloride? A-Sodium chloride is a malleable solid. B-Solid sodium chloride is a good conductor of electric current. C-Sodium chloride has a low melting… [cont.]
Asked by Kia - Fri Aug 7 14:22:57 2009 - - 2 Answers - 0 Comments
Chemistry help - Ionic compound formula?
Q. Barium ion and iodide ion - the answer is BaI2; the book shows the solution and why, but I don't understand it still. I got my answer correct for lithium ion and bromide ion, which is just LiBr. Anyhow, how the heck is barium ion is +2 and iodide is -1, is it because Barium is on 2A? @_@ Another problem of min is Aluminum ion and Sulfied ion. It says that Al charge is +3, when I look at the periodic table, Al is on 3A; sulfur is on 6A @_@ Does it mean that Al lost 3 electrons and sulfide ion gained 2? Woah! My teacher and the book never explained that to me. Does this only work for 1A-8A not 1B-8B? -_-' I'm really slow with chemistry.
Asked by Fayt - Sat Sep 27 14:12:09 2008 - - 1 Answers - 0 Comments
A. To figure this out look at the periodic table group 1 elements have a +1 charge, gr.2 like Ba have a +2. On the other end of the table you figure out the charge by taking 8 and subtracting the group number from it. Iodine I is in group 7 so 8-7 = 1 so the charge for I is -1. S would be 8-6 =2 so the charge on S is -2
Answered by just me - Sat Sep 27 14:33:00 2008
Q. Barium ion and iodide ion - the answer is BaI2; the book shows the solution and why, but I don't understand it still. I got my answer correct for lithium ion and bromide ion, which is just LiBr. Anyhow, how the heck is barium ion is +2 and iodide is -1, is it because Barium is on 2A? @_@ Another problem of min is Aluminum ion and Sulfied ion. It says that Al charge is +3, when I look at the periodic table, Al is on 3A; sulfur is on 6A @_@ Does it mean that Al lost 3 electrons and sulfide ion gained 2? Woah! My teacher and the book never explained that to me. Does this only work for 1A-8A not 1B-8B? -_-' I'm really slow with chemistry.
Asked by Fayt - Sat Sep 27 14:12:09 2008 - - 1 Answers - 0 Comments
A. To figure this out look at the periodic table group 1 elements have a +1 charge, gr.2 like Ba have a +2. On the other end of the table you figure out the charge by taking 8 and subtracting the group number from it. Iodine I is in group 7 so 8-7 = 1 so the charge for I is -1. S would be 8-6 =2 so the charge on S is -2
Answered by just me - Sat Sep 27 14:33:00 2008
Write formulas for each of the following compounds?
Q. a.) Sodium fluoride b.) Calcium Oxide (I think it is CaO but I'm not sure.) c.) potassuim sulfide d.) magnesium chloride e.) aluminum bromide f.) lithium nitride g.) iron (II) oxide My book don't have a chart and I'm trying to get answers from the examples but they aren't much help at all.
Asked by oreo_cookie5m - Tue Jan 1 23:12:06 2008 - - 2 Answers - 0 Comments
A. a) NaF b) CaO (You're Right) c) K2S d) MgCl2 e) AlBr3 f) Li3N g) FeO I'm pretty sure this is correct otherwise just look up on a table of ions.
Answered by His Raviisher - Wed Jan 2 03:01:29 2008
Q. a.) Sodium fluoride b.) Calcium Oxide (I think it is CaO but I'm not sure.) c.) potassuim sulfide d.) magnesium chloride e.) aluminum bromide f.) lithium nitride g.) iron (II) oxide My book don't have a chart and I'm trying to get answers from the examples but they aren't much help at all.
Asked by oreo_cookie5m - Tue Jan 1 23:12:06 2008 - - 2 Answers - 0 Comments
A. a) NaF b) CaO (You're Right) c) K2S d) MgCl2 e) AlBr3 f) Li3N g) FeO I'm pretty sure this is correct otherwise just look up on a table of ions.
Answered by His Raviisher - Wed Jan 2 03:01:29 2008
chemistry help! 10 points to the first correct answer!?
Q. A 14.5-g sample of hydrated lithium bromide is heated and the water is driven off. The dry sample has a mass of 10.2 g. What is the mole ratio between LiBr and H20? What is the formula of the hydrate. What is the mass % of water in the hydrate?
Asked by Splooka - Sun Dec 16 11:58:30 2007 - - 1 Answers - 0 Comments
A. Mass LiBr = 10.2 g Mass water = 14.5 - 10.2 = 4.3 g Moles LiBr = 10.2 / 86.845 = 0.117 Moles water = 4.3 / 18.02 = 0.239 moles ratio between LiBr and H2O = 0.490 To get the formula we divide by the smallest number 0.117/0.117 = 1 => LiBr 0.239 / 0.117 = 2 => H2O the formula is LiBr.2H2O % water = 4.3 x 100 / 14.5 = 29.7
Answered by Dr.A - Sun Dec 16 12:56:42 2007
Q. A 14.5-g sample of hydrated lithium bromide is heated and the water is driven off. The dry sample has a mass of 10.2 g. What is the mole ratio between LiBr and H20? What is the formula of the hydrate. What is the mass % of water in the hydrate?
Asked by Splooka - Sun Dec 16 11:58:30 2007 - - 1 Answers - 0 Comments
A. Mass LiBr = 10.2 g Mass water = 14.5 - 10.2 = 4.3 g Moles LiBr = 10.2 / 86.845 = 0.117 Moles water = 4.3 / 18.02 = 0.239 moles ratio between LiBr and H2O = 0.490 To get the formula we divide by the smallest number 0.117/0.117 = 1 => LiBr 0.239 / 0.117 = 2 => H2O the formula is LiBr.2H2O % water = 4.3 x 100 / 14.5 = 29.7
Answered by Dr.A - Sun Dec 16 12:56:42 2007
Calculate the Freezing Point?
Q. Calculate the Freezing Point (degrees celcius) of a solution composed of 495g of Lithium Bromide (LiBr) dissolved in 1.00 L of water. (Kf of H20 = 1.86 C/m) Do I use the formula Temp Freezing = Kfm?
Asked by Kevin - Mon Jul 20 15:43:21 2009 - - 2 Answers - 0 Comments
A. First calculate the number of moles: moles LiBr = 495 g/ 86.845 g/mol=5.70 Keep remember that LiBr is strong acid to completly dissociate: LiBr is a strong salt : LiBr => Li+ + Br- The formula for calculation is: delta T = kf x m x i where i = Vant'Hoff factor = 2 m = 5.70 / 1 Kg = 5.70 ( assuming density of water = 1 g/mL) delta T = kf x m x i = 1.86 x 5.70 x 2 =21.1 freezing point = 0 - 21.1 = - 21.1 C
Answered by dr_ibad_khan - Thu Jul 23 03:56:17 2009
Q. Calculate the Freezing Point (degrees celcius) of a solution composed of 495g of Lithium Bromide (LiBr) dissolved in 1.00 L of water. (Kf of H20 = 1.86 C/m) Do I use the formula Temp Freezing = Kfm?
Asked by Kevin - Mon Jul 20 15:43:21 2009 - - 2 Answers - 0 Comments
A. First calculate the number of moles: moles LiBr = 495 g/ 86.845 g/mol=5.70 Keep remember that LiBr is strong acid to completly dissociate: LiBr is a strong salt : LiBr => Li+ + Br- The formula for calculation is: delta T = kf x m x i where i = Vant'Hoff factor = 2 m = 5.70 / 1 Kg = 5.70 ( assuming density of water = 1 g/mL) delta T = kf x m x i = 1.86 x 5.70 x 2 =21.1 freezing point = 0 - 21.1 = - 21.1 C
Answered by dr_ibad_khan - Thu Jul 23 03:56:17 2009
Can someone give me the formula for these Ionic Compounds?
Q. Or if you have an internet site that could calculate them for me. Yes this is my homework but i forgot my book so i dont know what the different prefixes/suffixes mean If youd rather just do 3 or 4 thats fine thankyou :) danielle 1. Radium bromide 2. aluminum sulfide 3. lithium phosphide 4. lead(II)oxide 5.lead(IV)oxide 6. francium sulfide 7. strontium arsenide 8. rubidium terruride 9. gallium iodide 10. thallium sulfide 11. hydrogen oxide 12. magnesium carbide 13. potassium boride 14. indium sulfide 15. aluminum selenide 16. calcium bromide 17. sodium iodide 18. radium flouride 19. rubidium oxide
Asked by Danielle - Thu Dec 11 21:34:12 2008 - - 2 Answers - 0 Comments
A. 1. RaBr2 2. Al2S3 3. Li3P 4. PbO 5. PbO2 6. Fr2S 7. Sr3As2 8. Rb2Te 9. GaI3 10. Th2S3 11. H2O (dihydrogen monoxide?) OH is the hydroxide ion 12. Mg2C 13. KBr (potassium bromide? potassium and boron can't form ionic an compound) 14. In2S3 15. AlSe 16. CaBr2 17. NaI 18. RaF2 19. Rb2O Numbers should be subscripts, of course.
Answered by hliztaylor - Thu Dec 11 21:52:53 2008
Q. Or if you have an internet site that could calculate them for me. Yes this is my homework but i forgot my book so i dont know what the different prefixes/suffixes mean If youd rather just do 3 or 4 thats fine thankyou :) danielle 1. Radium bromide 2. aluminum sulfide 3. lithium phosphide 4. lead(II)oxide 5.lead(IV)oxide 6. francium sulfide 7. strontium arsenide 8. rubidium terruride 9. gallium iodide 10. thallium sulfide 11. hydrogen oxide 12. magnesium carbide 13. potassium boride 14. indium sulfide 15. aluminum selenide 16. calcium bromide 17. sodium iodide 18. radium flouride 19. rubidium oxide
Asked by Danielle - Thu Dec 11 21:34:12 2008 - - 2 Answers - 0 Comments
A. 1. RaBr2 2. Al2S3 3. Li3P 4. PbO 5. PbO2 6. Fr2S 7. Sr3As2 8. Rb2Te 9. GaI3 10. Th2S3 11. H2O (dihydrogen monoxide?) OH is the hydroxide ion 12. Mg2C 13. KBr (potassium bromide? potassium and boron can't form ionic an compound) 14. In2S3 15. AlSe 16. CaBr2 17. NaI 18. RaF2 19. Rb2O Numbers should be subscripts, of course.
Answered by hliztaylor - Thu Dec 11 21:52:53 2008
Chemistry help please!?
Q. 1. How many valence electrons are transferred from the calcium atom to iodine in the formation of the compound calcium iodide? A.0 B.1 C.2 D.3 2. What is the name of the ionic compound formed from lithium and bromine? A. lithium bromine B.lithium bromide C.lithium bromium D.lithium bromate 3.Ionic compounds are normally in which physical state at room temperature? A.solid B.liquid C.gas D.plasma 4.What does the term coordination number in ionic crystals refer to? A.the total number of valence electrons in an atom B.the number of oppositely charged ions surrounding a particular ion C.the number of atoms in a particular formula unit D.the number of like-charged ions surrounding a particular ion 5.Under what conditions can potassium… [cont.]
Asked by unknown - Tue Apr 28 09:50:48 2009 - - 2 Answers - 0 Comments
A. 2. B 6. B 8. B 9. A 11. B 12. A I think...
Answered by Apollo - Tue Apr 28 10:00:58 2009
Q. 1. How many valence electrons are transferred from the calcium atom to iodine in the formation of the compound calcium iodide? A.0 B.1 C.2 D.3 2. What is the name of the ionic compound formed from lithium and bromine? A. lithium bromine B.lithium bromide C.lithium bromium D.lithium bromate 3.Ionic compounds are normally in which physical state at room temperature? A.solid B.liquid C.gas D.plasma 4.What does the term coordination number in ionic crystals refer to? A.the total number of valence electrons in an atom B.the number of oppositely charged ions surrounding a particular ion C.the number of atoms in a particular formula unit D.the number of like-charged ions surrounding a particular ion 5.Under what conditions can potassium… [cont.]
Asked by unknown - Tue Apr 28 09:50:48 2009 - - 2 Answers - 0 Comments
A. 2. B 6. B 8. B 9. A 11. B 12. A I think...
Answered by Apollo - Tue Apr 28 10:00:58 2009
Can anyone give me the correct formula for these compounds (extra credit so i can pass)?
Q. 1. Strontium bromide 2. Perbromic acid 3. Hydrocyanic acid 4. Gallium(III) phosphite 5. Sodium perbromate tetrahydrate 6. Tin (IV) dichromate 7. Silver (I) cyanide dihydrate 8. Cobalt (I) carbonate trihydrate 9. Ammonium periodate monohydrate 10. Lithium chlorate dihydrate 11.Chromium (IV) peroxide 12. Hydroazic acid 13. Indium (I) arsenate 14. Cesium Bromide 15. Chromium (III) chromate 16. Gold (III) cyanate 17. Iron (III) chloride heptahydrate
Asked by Namtrix - Tue Apr 14 19:48:48 2009 - - 1 Answers - 0 Comments
A. I don't have a periodic table handy, so I'll tell you what I know... 1. i think strontium is +2 charge... so, SrBr2 if it's +1, then SrBr 2. HBrO4 3. HCN 5. NaHBrO4*4H2O 6. Sn(2CrO4)4 7. AgCN*2H2O 8. Co2CO3*3H2O 10. LiHClO*2H2O 11. Cr2O8 (not 100% sure on this one) 12. HN3 14. i think cesium is +2 charge... if so, CeBr2 15. Cr2(CrO4)3 (might want to check this as well) 17. FeCl3*7H2O
Answered by loverofthelord - Tue Apr 14 20:11:13 2009
Q. 1. Strontium bromide 2. Perbromic acid 3. Hydrocyanic acid 4. Gallium(III) phosphite 5. Sodium perbromate tetrahydrate 6. Tin (IV) dichromate 7. Silver (I) cyanide dihydrate 8. Cobalt (I) carbonate trihydrate 9. Ammonium periodate monohydrate 10. Lithium chlorate dihydrate 11.Chromium (IV) peroxide 12. Hydroazic acid 13. Indium (I) arsenate 14. Cesium Bromide 15. Chromium (III) chromate 16. Gold (III) cyanate 17. Iron (III) chloride heptahydrate
Asked by Namtrix - Tue Apr 14 19:48:48 2009 - - 1 Answers - 0 Comments
A. I don't have a periodic table handy, so I'll tell you what I know... 1. i think strontium is +2 charge... so, SrBr2 if it's +1, then SrBr 2. HBrO4 3. HCN 5. NaHBrO4*4H2O 6. Sn(2CrO4)4 7. AgCN*2H2O 8. Co2CO3*3H2O 10. LiHClO*2H2O 11. Cr2O8 (not 100% sure on this one) 12. HN3 14. i think cesium is +2 charge... if so, CeBr2 15. Cr2(CrO4)3 (might want to check this as well) 17. FeCl3*7H2O
Answered by loverofthelord - Tue Apr 14 20:11:13 2009
Can somebody write the formula for each and balance.! Thanks a ton!?
Q. 3. calcium fluoride and sulphuric acid make calcium sulphate and hydrogen fluoride. 4.calcium carbonate will come apart when you heat it to leave calcium oxide and carbon dioxide. 5. ammonia gas when it is pressed into water will make ammonium hydroxide. 6.zinc sulphide and oxygen become zinc oxide and sulphur 7.lithium oxide and water make lithium hydroxide 8.aluminum hydroxide and euphoric acid neutralize acid to make water and aluminum sulpahte. 9.sulphur burns in oxygen to make sulphur dioxide. 10.barium hydroxide and sulphuric acid make water and barium sulphate 11.aluminum sulphate and calcium hydroxide become aluminum hydroxide and calcium sulpahte. 12. copper metal and silver nitrate react to from silver metal and copper(II) [cont.]
Asked by C.C. - Mon Feb 23 16:20:26 2009 - - 1 Answers - 0 Comments
A. and you can't do this because...?
Answered by itsjennbabyy - Mon Feb 23 16:23:30 2009
Q. 3. calcium fluoride and sulphuric acid make calcium sulphate and hydrogen fluoride. 4.calcium carbonate will come apart when you heat it to leave calcium oxide and carbon dioxide. 5. ammonia gas when it is pressed into water will make ammonium hydroxide. 6.zinc sulphide and oxygen become zinc oxide and sulphur 7.lithium oxide and water make lithium hydroxide 8.aluminum hydroxide and euphoric acid neutralize acid to make water and aluminum sulpahte. 9.sulphur burns in oxygen to make sulphur dioxide. 10.barium hydroxide and sulphuric acid make water and barium sulphate 11.aluminum sulphate and calcium hydroxide become aluminum hydroxide and calcium sulpahte. 12. copper metal and silver nitrate react to from silver metal and copper(II) [cont.]
Asked by C.C. - Mon Feb 23 16:20:26 2009 - - 1 Answers - 0 Comments
A. and you can't do this because...?
Answered by itsjennbabyy - Mon Feb 23 16:23:30 2009
If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter t?
Q. 1. If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the compound formula, including the state, of the soluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by comma. barium bromide + lithium nitrate 2. If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including the state, of the insoluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by comma. K2SO4(aq) + Pb(NO3)2(aq) 3. If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including… [cont.]
Asked by unknown - Sat May 9 04:05:10 2009 - - 1 Answers - 0 Comments
A. BaBr2 (s) + 2 LiNO3 = no reaction K2SO4 (aq) + Pb(NO3)2 (aq) = PbSO4 (s) + 2 KNO3 (aq) FeCl3 (aq) + 3 KOH (aq) = Fe(OH)3 (s) + 3 KCl (aq)
Answered by Dr.A - Sat May 9 04:45:34 2009
Q. 1. If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the compound formula, including the state, of the soluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by comma. barium bromide + lithium nitrate 2. If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including the state, of the insoluble product. If there is no reaction, enter the formula and state of all ions in solution, separate by comma. K2SO4(aq) + Pb(NO3)2(aq) 3. If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formula, including… [cont.]
Asked by unknown - Sat May 9 04:05:10 2009 - - 1 Answers - 0 Comments
A. BaBr2 (s) + 2 LiNO3 = no reaction K2SO4 (aq) + Pb(NO3)2 (aq) = PbSO4 (s) + 2 KNO3 (aq) FeCl3 (aq) + 3 KOH (aq) = Fe(OH)3 (s) + 3 KCl (aq)
Answered by Dr.A - Sat May 9 04:45:34 2009
writing formulas, several problems.?
Q. 1) magnesium oxide 2) lithium bromide 3) Calcium nitrate 4) aluminum sulfide 5) potassium iodide 6) chromium(III) oxide 7) copper(I) sulfide 8) lead(IV) iodide 9) gold(I) flouride 10) mercury(I) bromide 11) silver carbonate 12) aluminum hydroxide 13) calcium acetate 14) lithium carbonate 15) tin(IV) chlorite 16) mercury(II) phosphate 17) tin(II) carbonate
Asked by hugemarkus - Mon Dec 17 22:51:32 2007 - - 1 Answers - 0 Comments
A. 1. Mg(OH)2 2. LiBr 3. Ca(NO3)2 4. Al2(SO4)3 5. KI 6. Cr2O3 7. Cu2S 8. PbI4 9. AuF 10. HgBr 11. Ag2CO3 12. Al(OH)3 13. Ca(CH3COO)2 14. Li2CO3 15. Sn(ClO3)4 16. Hg3(PO4)2 17. SnCO3 I hope these help.
Answered by o-O - Mon Dec 17 22:56:48 2007
Q. 1) magnesium oxide 2) lithium bromide 3) Calcium nitrate 4) aluminum sulfide 5) potassium iodide 6) chromium(III) oxide 7) copper(I) sulfide 8) lead(IV) iodide 9) gold(I) flouride 10) mercury(I) bromide 11) silver carbonate 12) aluminum hydroxide 13) calcium acetate 14) lithium carbonate 15) tin(IV) chlorite 16) mercury(II) phosphate 17) tin(II) carbonate
Asked by hugemarkus - Mon Dec 17 22:51:32 2007 - - 1 Answers - 0 Comments
A. 1. Mg(OH)2 2. LiBr 3. Ca(NO3)2 4. Al2(SO4)3 5. KI 6. Cr2O3 7. Cu2S 8. PbI4 9. AuF 10. HgBr 11. Ag2CO3 12. Al(OH)3 13. Ca(CH3COO)2 14. Li2CO3 15. Sn(ClO3)4 16. Hg3(PO4)2 17. SnCO3 I hope these help.
Answered by o-O - Mon Dec 17 22:56:48 2007
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