What are the coefficients in front of NO3-(aq) and Cu(s) when the following redox equation is balanced?
Q. _NO3-(aq) + _Cu(s) --> _NO(g) + _ Cu2+(aq)
Asked by Evan - Sat Nov 21 23:08:18 2009 - - 1 Answers - 0 Comments
Q. _NO3-(aq) + _Cu(s) --> _NO(g) + _ Cu2+(aq)
Asked by Evan - Sat Nov 21 23:08:18 2009 - - 1 Answers - 0 Comments
Net Ionic Equation for Cu(s) + 4HNO3(aq) --> Cu(NO3)2(aq) + NO2(g) + 2H2O(l) ?? HELP!?
Q. I have tried this a zillion times and can't figure it out. Best I've come up with is Cu(s) + 4H-(aq) + 4NO3-(aq) --> Cu+(aq) + 2NO3-(aq) + NO2(g) + 2H20 (l) ... but that's not balanced and I can't figure out how to do that either.
Asked by seagrapeleaves - Sun Feb 28 22:21:55 2010 - - 1 Answers - 0 Comments
A. I have to double the amount of NO2 produced Cu(s) + 4HNO3(aq) --> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) Net Ionic Equation for Cu(s) + 2 (NO3)-1(aq) & 4 H+ (aq) --> Cu+2(aq) + 2 NO2(g) + 2H2O(l)
Answered by Steve O - Sun Feb 28 23:03:29 2010
Q. I have tried this a zillion times and can't figure it out. Best I've come up with is Cu(s) + 4H-(aq) + 4NO3-(aq) --> Cu+(aq) + 2NO3-(aq) + NO2(g) + 2H20 (l) ... but that's not balanced and I can't figure out how to do that either.
Asked by seagrapeleaves - Sun Feb 28 22:21:55 2010 - - 1 Answers - 0 Comments
A. I have to double the amount of NO2 produced Cu(s) + 4HNO3(aq) --> Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) Net Ionic Equation for Cu(s) + 2 (NO3)-1(aq) & 4 H+ (aq) --> Cu+2(aq) + 2 NO2(g) + 2H2O(l)
Answered by Steve O - Sun Feb 28 23:03:29 2010
need help balancing the Net Ionic equation for this reaction?
Q. H+(aq) + Cu(s) + NO3 -(aq) --> H2O(l) + NO3 -(aq) + Cu2+(aq) + NO2(g) some of them must be 0.. i tried 4,2,2,2,0,2,2 before, all elements and charge are balanced,but it wasnt the answer..if you make it 2,1,1,1,0,1,1..the charges will not be balanced..thats not the answer neither thx!!
Asked by Not A - Fri May 29 18:19:34 2009 - - 2 Answers - 0 Comments
A. Obviously NO3- can't be on both sides and we need a N source so make coeff of NO3- on right be 0 as you did. Simply chemical balancing where a, b, c are unknowns. 2a.H+ + b.Cu + c.NO3- = a.H2O + b.Cu2+ +c.NO2 For oxygens: 3c = a + 2c so a=c and call them both unity -- 2.H+ + b.Cu + NO3- = H2O + b.Cu2+ + NO2 For charges 2 - 1 = 2b, so b=.5. 4.H+ + Cu + 2.NO3- = 2.H2O + Cu2+ + 2NO2 4,1,2,2,0,1,2
Answered by James - Fri May 29 18:39:05 2009
Q. H+(aq) + Cu(s) + NO3 -(aq) --> H2O(l) + NO3 -(aq) + Cu2+(aq) + NO2(g) some of them must be 0.. i tried 4,2,2,2,0,2,2 before, all elements and charge are balanced,but it wasnt the answer..if you make it 2,1,1,1,0,1,1..the charges will not be balanced..thats not the answer neither thx!!
Asked by Not A - Fri May 29 18:19:34 2009 - - 2 Answers - 0 Comments
A. Obviously NO3- can't be on both sides and we need a N source so make coeff of NO3- on right be 0 as you did. Simply chemical balancing where a, b, c are unknowns. 2a.H+ + b.Cu + c.NO3- = a.H2O + b.Cu2+ +c.NO2 For oxygens: 3c = a + 2c so a=c and call them both unity -- 2.H+ + b.Cu + NO3- = H2O + b.Cu2+ + NO2 For charges 2 - 1 = 2b, so b=.5. 4.H+ + Cu + 2.NO3- = 2.H2O + Cu2+ + 2NO2 4,1,2,2,0,1,2
Answered by James - Fri May 29 18:39:05 2009
How do u balance this equation?
Q. Cu(s) + AgNO3 (aq) --> Cu(NO3)2(aq) + Ag(s) The huge 3 and 2 are subscripts. This is chemistry equation, please help me balance it!
Asked by Sarah - Sun Jan 24 23:17:15 2010 - - 2 Answers - 0 Comments
A. Cu + 2AgNO3 (aq) --> Cu(NO3)2 + 2Ag
Answered by chuckanut - Sun Jan 24 23:27:29 2010
Q. Cu(s) + AgNO3 (aq) --> Cu(NO3)2(aq) + Ag(s) The huge 3 and 2 are subscripts. This is chemistry equation, please help me balance it!
Asked by Sarah - Sun Jan 24 23:17:15 2010 - - 2 Answers - 0 Comments
A. Cu + 2AgNO3 (aq) --> Cu(NO3)2 + 2Ag
Answered by chuckanut - Sun Jan 24 23:27:29 2010
A little help with Chem, plz and thanks :P?
Q. Calculate the number of NO that can be produced by the reaction of 14.0g Cu according to the following balanced equation: 8 NO3(aq) + 3 Cu(s) --> 2NO(g) + 3 Cu(NO3)2(aq) + 4 H2O(liquid) Thanks in advance :) Oh, and if possible, show the work . lol Haha...and its *calculate the Mass...* not the number...of NO...ooops...
Asked by SansCrainte - Wed Apr 8 21:57:55 2009 - - 1 Answers - 0 Comments
Q. Calculate the number of NO that can be produced by the reaction of 14.0g Cu according to the following balanced equation: 8 NO3(aq) + 3 Cu(s) --> 2NO(g) + 3 Cu(NO3)2(aq) + 4 H2O(liquid) Thanks in advance :) Oh, and if possible, show the work . lol Haha...and its *calculate the Mass...* not the number...of NO...ooops...
Asked by SansCrainte - Wed Apr 8 21:57:55 2009 - - 1 Answers - 0 Comments
I need help completing and balancing these chemical equations....?
Q. I need help completing and balancing these chemical equations... Ca(s) + Fe(NO3)3(aq) -> Cu(s) + FeCl3(aq) -> Ni(s) + K2SO4(aq) -> KOH(aq) + H2SO4(aq) ->
Asked by rem71682 - Sun Mar 22 15:55:52 2009 - - 1 Answers - 0 Comments
A. Use your activity metal series and see if calcium is higher on the table than iron and displace them Ca(s)+ Fe(NO3) 3 ---> Ca(NO3)3 + Fe then balance. its so easy.
Answered by allisontruelove- - Sun Mar 22 16:04:35 2009
Q. I need help completing and balancing these chemical equations... Ca(s) + Fe(NO3)3(aq) -> Cu(s) + FeCl3(aq) -> Ni(s) + K2SO4(aq) -> KOH(aq) + H2SO4(aq) ->
Asked by rem71682 - Sun Mar 22 15:55:52 2009 - - 1 Answers - 0 Comments
A. Use your activity metal series and see if calcium is higher on the table than iron and displace them Ca(s)+ Fe(NO3) 3 ---> Ca(NO3)3 + Fe then balance. its so easy.
Answered by allisontruelove- - Sun Mar 22 16:04:35 2009
Need fast chemistry help, please!?
Q. In the reaction Zn+ + Cu2+ -> Zn2+ + Cu, the oxidizing agent is a)Zn+ b)Cu2+ c)Zn2+ d)Cu Given the unbalanced reaction: Fe3+ + SN2+ -> Fe2+ + SN4+, if the equation is balanced correctly, what would be the coefficient in front of Fe3+? a)1 b)2 c)3 d)4 In the single replacement reaction Mg + 2HCl -> MgCl2 + H2, the hydrogen a)is oxidized and loses electrons b)is oxidized and gains electrons c)is reduced and loses electrons d)is reduced and gains electrons Which species acts as the anode in this galvanic cell below? Zn(s) + Pb2+(aq) ->Zn2+(aq) + Pb(s) a)Pb b)Zn2+ c)Zn d)Pb2+ When Cu(s) + NO3-(aq) -> Cu+(aq) + N2-(aq) is balanced correctly, what coefficient is in front of the water? a)1 b)2 c)3 d)6 e)7
Asked by Gravitic - Fri Jul 31 16:57:37 2009 - - 2 Answers - 0 Comments
A. 1. b 2.b 3.d 4.c 5.a
Answered by Dana - Fri Jul 31 17:06:19 2009
Q. In the reaction Zn+ + Cu2+ -> Zn2+ + Cu, the oxidizing agent is a)Zn+ b)Cu2+ c)Zn2+ d)Cu Given the unbalanced reaction: Fe3+ + SN2+ -> Fe2+ + SN4+, if the equation is balanced correctly, what would be the coefficient in front of Fe3+? a)1 b)2 c)3 d)4 In the single replacement reaction Mg + 2HCl -> MgCl2 + H2, the hydrogen a)is oxidized and loses electrons b)is oxidized and gains electrons c)is reduced and loses electrons d)is reduced and gains electrons Which species acts as the anode in this galvanic cell below? Zn(s) + Pb2+(aq) ->Zn2+(aq) + Pb(s) a)Pb b)Zn2+ c)Zn d)Pb2+ When Cu(s) + NO3-(aq) -> Cu+(aq) + N2-(aq) is balanced correctly, what coefficient is in front of the water? a)1 b)2 c)3 d)6 e)7
Asked by Gravitic - Fri Jul 31 16:57:37 2009 - - 2 Answers - 0 Comments
A. 1. b 2.b 3.d 4.c 5.a
Answered by Dana - Fri Jul 31 17:06:19 2009
"Steve O" ~ My Final extra credit Chemistry Equation Please!!!!!!!! :)?
Q. 1. 10 miles is equal to how many kilometers. (1 km = 0.621 mi)? a) 0.062 km b) 6.2 km c) 16 km d) 1.6 km e) 160 km 2. Convert 75 F to Celsius? a) 165 C b) 24 C c) 59 C d) 10 C 3. The mass of an object is 42.6 g and its volume is 7.1 cm3. Its density is? a) 0.17 g/cm3 b) 3.0x10^2 g/cm3 c) 6.0 g/cm3 d) 43 g/cm3 e) 49.7 g/cm3 4. The result of the following operation: 7.0x10^ -3 x 6.0x10^ -6 x 4x10^2 1.4x10^ -15 x 3x10^4 ? a) 7 x 10^4 b) 7 x 10^ -3 c) 4 x 10^ -4 d) 4 x 10^5 e) 4 x 104 5. Chemical properties of an element are determined by their? a) protons b) neutrons c) electrons d) mass number e) density 6. Determine the number of protons contained in an atom of the following element: Phosphorous, P? a) 2 b) 15 c) 16 … [cont.]
Asked by skool gurl - Wed Dec 9 23:29:25 2009 - - 1 Answers - 0 Comments
A. my answers doesn't allow me to answer questions this long I will try editing the answers to less text & it will take several entries to complete wait untill all answers appear, or I will have to email 1. b) 6.2 km 2.. b) 24 C 3. c) 6.0 g/cm3 4. ??? (7.0x10^ - 3) x (6.0x10^ -6) x (4x10^2) ? [(1.4x10^ -15) x (3x10^4)] = d) 4 x 10^5 if the "?" that I put in was supposed to be a "divided by" & the bracket are correctly placed otherwise email me back 5. c) electrons 6. b) 15 7. d) 14 8. c) 1s2, 2s2, 2p6, 3s2, 3p1 9. d) our senses are unable to detect radioactivity 10. a. 4 2a 11. b) 37.5 g 12. c) Ni 13. e) Mg2N3 14. e) Phosphide ion 15.b) :N N: 0 meaning 3 lines 16. c) triple covalent bond 17 c) 3 18. b) 159.7 amu … [cont.]
Answered by Steve O - Thu Dec 10 10:20:19 2009
Q. 1. 10 miles is equal to how many kilometers. (1 km = 0.621 mi)? a) 0.062 km b) 6.2 km c) 16 km d) 1.6 km e) 160 km 2. Convert 75 F to Celsius? a) 165 C b) 24 C c) 59 C d) 10 C 3. The mass of an object is 42.6 g and its volume is 7.1 cm3. Its density is? a) 0.17 g/cm3 b) 3.0x10^2 g/cm3 c) 6.0 g/cm3 d) 43 g/cm3 e) 49.7 g/cm3 4. The result of the following operation: 7.0x10^ -3 x 6.0x10^ -6 x 4x10^2 1.4x10^ -15 x 3x10^4 ? a) 7 x 10^4 b) 7 x 10^ -3 c) 4 x 10^ -4 d) 4 x 10^5 e) 4 x 104 5. Chemical properties of an element are determined by their? a) protons b) neutrons c) electrons d) mass number e) density 6. Determine the number of protons contained in an atom of the following element: Phosphorous, P? a) 2 b) 15 c) 16 … [cont.]
Asked by skool gurl - Wed Dec 9 23:29:25 2009 - - 1 Answers - 0 Comments
A. my answers doesn't allow me to answer questions this long I will try editing the answers to less text & it will take several entries to complete wait untill all answers appear, or I will have to email 1. b) 6.2 km 2.. b) 24 C 3. c) 6.0 g/cm3 4. ??? (7.0x10^ - 3) x (6.0x10^ -6) x (4x10^2) ? [(1.4x10^ -15) x (3x10^4)] = d) 4 x 10^5 if the "?" that I put in was supposed to be a "divided by" & the bracket are correctly placed otherwise email me back 5. c) electrons 6. b) 15 7. d) 14 8. c) 1s2, 2s2, 2p6, 3s2, 3p1 9. d) our senses are unable to detect radioactivity 10. a. 4 2a 11. b) 37.5 g 12. c) Ni 13. e) Mg2N3 14. e) Phosphide ion 15.b) :N N: 0 meaning 3 lines 16. c) triple covalent bond 17 c) 3 18. b) 159.7 amu … [cont.]
Answered by Steve O - Thu Dec 10 10:20:19 2009
predict in each case whether a reaction is likely to occur. if so, write a net ionic equation.?
Q. predict in each case whether a reaction is likely to occur. if so, write a net ionic equation. (a) HI(aq) + Zn(NO3)2(aq) ---> (b) CuSO4(aq) + Na2CO3(aq) --> (c) Cu(NO3)2(aq) + Na3PO4(aq) ---> (d) Ba^2+ + 2OH^- + HC2H3O2 ---> (e) H^+ + Cl^- + HC3H5O2 ---> (f) FeS(s) + H^+ + I^- ---> (g) K^+ + HCO3^- + H+ + NO3^- ---> (h) Mg(s) + H^+ ---> Ok, my 1st question how to balance the equation 2nd question how can you tell whether a compound is solid, liquid, gas or aquous 3rd how to do a net ionic equation and what do they mean by whether a reaction occurs or not? can someone please explain it to me clearly and briefly. thank you so much. i reallly need help with it since i have exam after 2 days
Asked by soni k - Wed Oct 15 17:31:20 2008 - - 1 Answers - 0 Comments
Q. predict in each case whether a reaction is likely to occur. if so, write a net ionic equation. (a) HI(aq) + Zn(NO3)2(aq) ---> (b) CuSO4(aq) + Na2CO3(aq) --> (c) Cu(NO3)2(aq) + Na3PO4(aq) ---> (d) Ba^2+ + 2OH^- + HC2H3O2 ---> (e) H^+ + Cl^- + HC3H5O2 ---> (f) FeS(s) + H^+ + I^- ---> (g) K^+ + HCO3^- + H+ + NO3^- ---> (h) Mg(s) + H^+ ---> Ok, my 1st question how to balance the equation 2nd question how can you tell whether a compound is solid, liquid, gas or aquous 3rd how to do a net ionic equation and what do they mean by whether a reaction occurs or not? can someone please explain it to me clearly and briefly. thank you so much. i reallly need help with it since i have exam after 2 days
Asked by soni k - Wed Oct 15 17:31:20 2008 - - 1 Answers - 0 Comments
Can anyone help me with balancing these chem equations please! and asap!! thanks!?
Q. Cu(s) HNO3 Cu(NO3)2(aq) ---> *the arrow is under HNO3 Cu(NO3)2(aq) NaOH Cu(OH)2(s) ---> *arrow under NaOH Cu(OH)2(s) heat CuO(s) ---> *arrow under heat CuO(s) H2SO4 CuSO4(aq) ---> *arrow under H2SO4 CuSO4(aq) Zn Cu(s) --> *arrow under Zn thanks soo much!!
Asked by Kim - Tue Mar 31 01:24:49 2009 - - 1 Answers - 0 Comments
A. 1st equation is wrong as Cu cant replace Hydrogen from HNO3. 2nd balanced equation is: Cu(NO3)2 (aq) + 2NaOH ---> Cu(OH)2 + 2NaNO3 3rd balanced equation is Cu(OH)2(s) heat CuO(s) +H2O ---> *arrow under heat 4th equation is wrong as Cu cant replace Hydrogen from H2SO4. 5th balanced equation is: CuSO4(aq) + Zn(aq) ---> Cu(s) +ZnSO4(aq)
Answered by Bandy - Tue Mar 31 01:46:08 2009
Q. Cu(s) HNO3 Cu(NO3)2(aq) ---> *the arrow is under HNO3 Cu(NO3)2(aq) NaOH Cu(OH)2(s) ---> *arrow under NaOH Cu(OH)2(s) heat CuO(s) ---> *arrow under heat CuO(s) H2SO4 CuSO4(aq) ---> *arrow under H2SO4 CuSO4(aq) Zn Cu(s) --> *arrow under Zn thanks soo much!!
Asked by Kim - Tue Mar 31 01:24:49 2009 - - 1 Answers - 0 Comments
A. 1st equation is wrong as Cu cant replace Hydrogen from HNO3. 2nd balanced equation is: Cu(NO3)2 (aq) + 2NaOH ---> Cu(OH)2 + 2NaNO3 3rd balanced equation is Cu(OH)2(s) heat CuO(s) +H2O ---> *arrow under heat 4th equation is wrong as Cu cant replace Hydrogen from H2SO4. 5th balanced equation is: CuSO4(aq) + Zn(aq) ---> Cu(s) +ZnSO4(aq)
Answered by Bandy - Tue Mar 31 01:46:08 2009
Chemistry- Balancing Chemical Equations!! Please Help!?
Q. Okay so someone just helped me and I think the name was...Arlu? Could you please help me again.. I have some more problems for you if you could help me solve them!!! :) ___CH3NH2(g)+ __ O2(g) ---> ___CO2(g)+ __H2O(l)+ __N2 ___Cu(NO3)2 (aq) + __KOH(aq)---> Cu(OH)2(s)+___ KNO3 --BCL3(aq)+ __ H2O (l)---> H3BO3 (s) + HCL (g) ---CaSiO3 (s) + HF (g)---> SiF4(g) + ___CaF2(s) +___ H2O(l) ___ (CN)2 (g) + __ H2O (l)___> H2C2O2(aq) + NH3 (g)
Asked by Katie S - Tue May 5 21:49:06 2009 - - 1 Answers - 0 Comments
A. I) 4CH3NH2(g) + 9 O2(g) = 4CO2(g) + 10H2O(l) + 2N2 II) Cu(NO3)2(aq) + 2KOH(aq) = Cu(OH)2(s) + 2KNO3 III) BCl3(aq) + 3H2O(l) = H3BO3(s) + 3HCl(g) IV) CaSiO3(s) + 6HF(g) = SiF4(g) + CaF2(s) + 3H2O(l) V) --- Something is wrong. ---
Answered by Mannu - Wed May 6 06:39:26 2009
Q. Okay so someone just helped me and I think the name was...Arlu? Could you please help me again.. I have some more problems for you if you could help me solve them!!! :) ___CH3NH2(g)+ __ O2(g) ---> ___CO2(g)+ __H2O(l)+ __N2 ___Cu(NO3)2 (aq) + __KOH(aq)---> Cu(OH)2(s)+___ KNO3 --BCL3(aq)+ __ H2O (l)---> H3BO3 (s) + HCL (g) ---CaSiO3 (s) + HF (g)---> SiF4(g) + ___CaF2(s) +___ H2O(l) ___ (CN)2 (g) + __ H2O (l)___> H2C2O2(aq) + NH3 (g)
Asked by Katie S - Tue May 5 21:49:06 2009 - - 1 Answers - 0 Comments
A. I) 4CH3NH2(g) + 9 O2(g) = 4CO2(g) + 10H2O(l) + 2N2 II) Cu(NO3)2(aq) + 2KOH(aq) = Cu(OH)2(s) + 2KNO3 III) BCl3(aq) + 3H2O(l) = H3BO3(s) + 3HCl(g) IV) CaSiO3(s) + 6HF(g) = SiF4(g) + CaF2(s) + 3H2O(l) V) --- Something is wrong. ---
Answered by Mannu - Wed May 6 06:39:26 2009
Balanced equations................ ..? 10pts! HELP!?!?
Q. Ok, so I need help with balancing equations. My instructor in not all that helpful and I don't like his way of teaching. It's too late to drop the class but anways if you could please explain to me how to do this stuff. One problem I would like to be solved is: Cu(NO3)2 (aq) + KOH (aq) - - > Cu(OH)2 (s) + KNO3 (aq) I know you have to balance it but HOWWW? please help me. i have a test next week and i need to know how to do this. i will give 10 pts to whoever explains the best! tHX much!
Asked by Karen - Wed Oct 15 15:39:23 2008 - - 4 Answers - 0 Comments
A. Cu(NO3)2 + KOH --> Cu(OH)2 + KNO3 Start by examing Cu(NO3)2: 1 Cu and 2 NO3 1 Cu on left and 1 Cu on right side - Cu balanced 2 NO3 on left and 1 on right side - put a 2 in front of KNO3 Cu(NO3)2 + KOH --> Cu(OH)2 + 2KNO3 Now examine K: 1 K on left and 2 K on right side - K unbalanced Place a 2 in front of KOH Cu(NO3)2 + 2KOH --> Cu(OH)2 + 2KNO3 Now examine OH: 2 OH on left and 2 on right side - OH is balanced Cu(NO3)2 + 2KOH --> Cu(OH)2 + 2KNO3
Answered by skipper - Wed Oct 15 15:49:28 2008
Q. Ok, so I need help with balancing equations. My instructor in not all that helpful and I don't like his way of teaching. It's too late to drop the class but anways if you could please explain to me how to do this stuff. One problem I would like to be solved is: Cu(NO3)2 (aq) + KOH (aq) - - > Cu(OH)2 (s) + KNO3 (aq) I know you have to balance it but HOWWW? please help me. i have a test next week and i need to know how to do this. i will give 10 pts to whoever explains the best! tHX much!
Asked by Karen - Wed Oct 15 15:39:23 2008 - - 4 Answers - 0 Comments
A. Cu(NO3)2 + KOH --> Cu(OH)2 + KNO3 Start by examing Cu(NO3)2: 1 Cu and 2 NO3 1 Cu on left and 1 Cu on right side - Cu balanced 2 NO3 on left and 1 on right side - put a 2 in front of KNO3 Cu(NO3)2 + KOH --> Cu(OH)2 + 2KNO3 Now examine K: 1 K on left and 2 K on right side - K unbalanced Place a 2 in front of KOH Cu(NO3)2 + 2KOH --> Cu(OH)2 + 2KNO3 Now examine OH: 2 OH on left and 2 on right side - OH is balanced Cu(NO3)2 + 2KOH --> Cu(OH)2 + 2KNO3
Answered by skipper - Wed Oct 15 15:49:28 2008
Reaction of Copper with Nitric Acid ?
Q. Balance the following reaction equations. Enter all coefficients for the reagents and products including "1" or "0" whenever appropriate. The coefficients should be reduced to the smallest useful (non-negative) integers. Cu(s) + HNO3(aq) --> NO2(g) + H2O(l) + Cu(NO3)2(aq) and H+(aq) + Cu(s) + NO3-(aq) --> Cu2+(aq) + NO3-(aq) + NO2(g) + H2O(l)
Asked by Zock on A - Sun Sep 28 06:01:10 2008 - - 1 Answers - 1 Comments
A. Cu + 4 HNO3 >> 2 NO2 + 2 H2O + Cu(NO3)2 4 H+ + Cu + 4 NO3- >> Cu2+ + 2 NO3- + 2 NO2 + 2 H2O
Answered by Dr.A - Sun Sep 28 12:43:01 2008
Q. Balance the following reaction equations. Enter all coefficients for the reagents and products including "1" or "0" whenever appropriate. The coefficients should be reduced to the smallest useful (non-negative) integers. Cu(s) + HNO3(aq) --> NO2(g) + H2O(l) + Cu(NO3)2(aq) and H+(aq) + Cu(s) + NO3-(aq) --> Cu2+(aq) + NO3-(aq) + NO2(g) + H2O(l)
Asked by Zock on A - Sun Sep 28 06:01:10 2008 - - 1 Answers - 1 Comments
A. Cu + 4 HNO3 >> 2 NO2 + 2 H2O + Cu(NO3)2 4 H+ + Cu + 4 NO3- >> Cu2+ + 2 NO3- + 2 NO2 + 2 H2O
Answered by Dr.A - Sun Sep 28 12:43:01 2008
I need help ASAP!!! PLEASE HELP!?
Q. 1)Calculate the normality of a solution that was prepared by dissolving 43.3 g of barium hydroxide in enough water to make 2160.0 mL of solution. 2)Balance the following equations: MnO4- (aq) + H+ (aq) + Br- (aq) --> Mn2+ (aq) + Br2 (l) + H2O (l) MnO4- (aq) + H2O (l) + NO2- (aq) --> MnO2 (s) + NO3- (aq) + OH- (aq) 3) Balance the following equation for a reaction in acidic solution. Only H+ or H2O may be added. Cl2(g) --> ClO3-(aq) + Cl-(aq) 4)The following reaction occurs in basic solution. Balance it by adding only OH- or H2O. N2H4(aq) + Cu(OH)2(s) --> N2(g)+ Cu(s) 5) Oxygen gas can be generated by heating KClO3 in the presence of some MnO2. 2KClO3 --> 2KCl + 3O2 If all the KClO3 in a mixture containing 2.07 g KClO3 and 0.30 g… [cont.]
Asked by ^Blue Rose^ - Thu Oct 4 22:28:08 2007 - - 1 Answers - 0 Comments
A. Sorry, your query isn't worth 10 points to complete.
Answered by cattbarf - Thu Oct 4 22:35:08 2007
Q. 1)Calculate the normality of a solution that was prepared by dissolving 43.3 g of barium hydroxide in enough water to make 2160.0 mL of solution. 2)Balance the following equations: MnO4- (aq) + H+ (aq) + Br- (aq) --> Mn2+ (aq) + Br2 (l) + H2O (l) MnO4- (aq) + H2O (l) + NO2- (aq) --> MnO2 (s) + NO3- (aq) + OH- (aq) 3) Balance the following equation for a reaction in acidic solution. Only H+ or H2O may be added. Cl2(g) --> ClO3-(aq) + Cl-(aq) 4)The following reaction occurs in basic solution. Balance it by adding only OH- or H2O. N2H4(aq) + Cu(OH)2(s) --> N2(g)+ Cu(s) 5) Oxygen gas can be generated by heating KClO3 in the presence of some MnO2. 2KClO3 --> 2KCl + 3O2 If all the KClO3 in a mixture containing 2.07 g KClO3 and 0.30 g… [cont.]
Asked by ^Blue Rose^ - Thu Oct 4 22:28:08 2007 - - 1 Answers - 0 Comments
A. Sorry, your query isn't worth 10 points to complete.
Answered by cattbarf - Thu Oct 4 22:35:08 2007
I need help in chemistry PLEASE HELP ME!!!!?
Q. The question is : Predict wether a solid will form when the following pairs of solutions are mixed. If so, identify the solid and write the balanced equation for the reaction a.Ba(NO3)2(aq) and NaCl(aq) b.Na2S(aq) and Cu(NO3)2(aq) c.NH4Cl(aq) and Pb(NO3)2(aq) Your help is greatly appreciated thankyou
Asked by Sergio - Tue Feb 2 23:55:15 2010 - - 1 Answers - 0 Comments
A. Answer B will lead to a solid (Most sulfides of transition metals are highly insoluble) Answer C will lead to a solid (Salts containing Cl, Br, or I are generally soluble unless paired with Ag, Pb, or Hg) Answer C balanced equation: 2NH4Cl + Pb(NO3)2 --> PbCl2 + 2NH4(NO3) You can balance the rest =p
Answered by david888lee - Wed Feb 3 03:58:45 2010
Q. The question is : Predict wether a solid will form when the following pairs of solutions are mixed. If so, identify the solid and write the balanced equation for the reaction a.Ba(NO3)2(aq) and NaCl(aq) b.Na2S(aq) and Cu(NO3)2(aq) c.NH4Cl(aq) and Pb(NO3)2(aq) Your help is greatly appreciated thankyou
Asked by Sergio - Tue Feb 2 23:55:15 2010 - - 1 Answers - 0 Comments
A. Answer B will lead to a solid (Most sulfides of transition metals are highly insoluble) Answer C will lead to a solid (Salts containing Cl, Br, or I are generally soluble unless paired with Ag, Pb, or Hg) Answer C balanced equation: 2NH4Cl + Pb(NO3)2 --> PbCl2 + 2NH4(NO3) You can balance the rest =p
Answered by david888lee - Wed Feb 3 03:58:45 2010
For the reactions that will occur, write the products and balance the equation.?
Q. 1. Zn(s) + Pb(NO3)2(aq) --> ___ 2. Cl2(g) + KI(aq) --> ___ 3. Cu(s) +FeSO4(aq) --> ___ 4. Ba(s) +H2O(L) --> ___
Asked by Jessica - Mon Jan 11 01:06:25 2010 - - 1 Answers - 0 Comments
A. 1. Zn(s) + Pb(NO3)2(aq) --> Zn(NO3)2(aq) + Pb(s) 2. Cl2(g) +2 KI(aq) --> 2KCl(aq) + I2(aq) 3. Cu(s) +FeSO4(aq) --> no reaction as Cu less reactive than Fe 4. Ba(s) +2H2O(l) --> Ba(OH)2(aq) + H2(g)
Answered by Colin - Mon Jan 11 07:35:09 2010
Q. 1. Zn(s) + Pb(NO3)2(aq) --> ___ 2. Cl2(g) + KI(aq) --> ___ 3. Cu(s) +FeSO4(aq) --> ___ 4. Ba(s) +H2O(L) --> ___
Asked by Jessica - Mon Jan 11 01:06:25 2010 - - 1 Answers - 0 Comments
A. 1. Zn(s) + Pb(NO3)2(aq) --> Zn(NO3)2(aq) + Pb(s) 2. Cl2(g) +2 KI(aq) --> 2KCl(aq) + I2(aq) 3. Cu(s) +FeSO4(aq) --> no reaction as Cu less reactive than Fe 4. Ba(s) +2H2O(l) --> Ba(OH)2(aq) + H2(g)
Answered by Colin - Mon Jan 11 07:35:09 2010
Equations for a year 11 term 1 Chemistry assignment?
Q. I did an experiment on the law of conservation of mass and as part of it I have to include balanced equations for each step (one equation for each step asides from 2 for step 5 and 0 for step 6). I have been slaving over the assignment doing and redoing these equations and I've come up with this: Step 1 Equation 3Cu(s) + 8HNO3(aq) 3Cu(NO3)2(aq) + 2NO(g) + 4H2O (l) Classification: metal + acid reaction Step 2 Equation Cu(NO3)2(aq)+2H20(l) + NaOH(aq) Cu(OH)2 (aq) + 2NaNO3(s) Step 3 Equation Cu(OH)2 (aq) + 2NaNO3(s) CuO(aq) + H2O(l) Step 4 Equation CuO(aq) + H2SO4(aq) CuSO4H2O(aq) Step 5 Equations CuSo4(aq) + Zn(s) Cu(s) + ZnSO4(aq) Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g) But I am concerned it is horribly wrong, can anyone… [cont.]
Asked by Maddison - Thu Feb 25 20:08:17 2010 - - 1 Answers - 0 Comments
A. 1) 3Cu(s) + 8HNO3(aq) = 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(l) 2 & 3 = same 3)Cu(OH)2(aq) + 2NaNO3(s) = Cu(NO3)2(aq) + 2NaOH 4) CuO(aq) + H2SO4(aq) = CuSO4 + H2O(aq) 5 CuSO4(aq) + Zn(s) = Cu(s) + ZnSO4(aq) Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g) hmm so exactly what am I helping you with? Seems you got it all right?
Answered by Live 4 Something or Die 4 Nothin - Thu Feb 25 20:27:13 2010
Q. I did an experiment on the law of conservation of mass and as part of it I have to include balanced equations for each step (one equation for each step asides from 2 for step 5 and 0 for step 6). I have been slaving over the assignment doing and redoing these equations and I've come up with this: Step 1 Equation 3Cu(s) + 8HNO3(aq) 3Cu(NO3)2(aq) + 2NO(g) + 4H2O (l) Classification: metal + acid reaction Step 2 Equation Cu(NO3)2(aq)+2H20(l) + NaOH(aq) Cu(OH)2 (aq) + 2NaNO3(s) Step 3 Equation Cu(OH)2 (aq) + 2NaNO3(s) CuO(aq) + H2O(l) Step 4 Equation CuO(aq) + H2SO4(aq) CuSO4H2O(aq) Step 5 Equations CuSo4(aq) + Zn(s) Cu(s) + ZnSO4(aq) Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g) But I am concerned it is horribly wrong, can anyone… [cont.]
Asked by Maddison - Thu Feb 25 20:08:17 2010 - - 1 Answers - 0 Comments
A. 1) 3Cu(s) + 8HNO3(aq) = 3Cu(NO3)2(aq) + 2NO(g) + 4H2O(l) 2 & 3 = same 3)Cu(OH)2(aq) + 2NaNO3(s) = Cu(NO3)2(aq) + 2NaOH 4) CuO(aq) + H2SO4(aq) = CuSO4 + H2O(aq) 5 CuSO4(aq) + Zn(s) = Cu(s) + ZnSO4(aq) Zn(s) + H2SO4(aq) ZnSO4(aq) + H2(g) hmm so exactly what am I helping you with? Seems you got it all right?
Answered by Live 4 Something or Die 4 Nothin - Thu Feb 25 20:27:13 2010
Completely balanced chemical equations for the following reactions (including states)? and Oxidation agents...
Q. Ok fine not all but only the ones I am not sure of... thanx!!! Hey sorry guys, last time I posted these questions, some you got mad thinking that I just want the answers. But, I ve actually tried. You guys can verify my answers... thanks.. (PS: I don t have rubber book so I don t know the right answers!) Please give balanced equations (include states of reatcants & products. Also, indicate oxidizing agent (OA) where redox reactions are applicable: 2) Combustion of elemental Phosphorus. P4(s) + 5 O2(g) P4O10(s) (OA oxygen) 4) Dissolving Cu in concentrated nitric acid. Cu(s) + 4 HNO3(aq) Cu(NO3)2(aq) + 2 NO2(g) + 2 H2O(l) (OA nitric acid) 6) Dissolving Ca in H2O. Ca(s) + 2 H2O(l) + Ca(OH)2 (s or aq??) + H2(g) (OA water) 7)… [cont.]
Asked by Karan S - Sat Sep 30 18:56:00 2006 - - 1 Answers - 0 Comments
A. They look reasonable (without spending the 1/2 hour to work them completely).
Answered by Otts Shoals - Sat Sep 30 23:13:45 2006
Q. Ok fine not all but only the ones I am not sure of... thanx!!! Hey sorry guys, last time I posted these questions, some you got mad thinking that I just want the answers. But, I ve actually tried. You guys can verify my answers... thanks.. (PS: I don t have rubber book so I don t know the right answers!) Please give balanced equations (include states of reatcants & products. Also, indicate oxidizing agent (OA) where redox reactions are applicable: 2) Combustion of elemental Phosphorus. P4(s) + 5 O2(g) P4O10(s) (OA oxygen) 4) Dissolving Cu in concentrated nitric acid. Cu(s) + 4 HNO3(aq) Cu(NO3)2(aq) + 2 NO2(g) + 2 H2O(l) (OA nitric acid) 6) Dissolving Ca in H2O. Ca(s) + 2 H2O(l) + Ca(OH)2 (s or aq??) + H2(g) (OA water) 7)… [cont.]
Asked by Karan S - Sat Sep 30 18:56:00 2006 - - 1 Answers - 0 Comments
A. They look reasonable (without spending the 1/2 hour to work them completely).
Answered by Otts Shoals - Sat Sep 30 23:13:45 2006
Balance the equations and then classify each as a precipitation, an acid-base, or a gas-forming reaction.?
Q. (a) K2CO3(aq) + Cu(NO3)2(aq) = CuCO3(s) + KNO3(aq) (b) Pb(NO3)2(aq) + HCl(aq) = PbCl2(s) + HNO3(aq) (c) MgCO3(s) + HCl(aq) = MgCl2(aq) + H2O(l) + CO2(g) Prectipitation, Acid-base, or Gas-forming? (a) (b) (c)
Asked by Fgyhj - Thu Sep 17 13:40:46 2009 - - 1 Answers - 0 Comments
Q. (a) K2CO3(aq) + Cu(NO3)2(aq) = CuCO3(s) + KNO3(aq) (b) Pb(NO3)2(aq) + HCl(aq) = PbCl2(s) + HNO3(aq) (c) MgCO3(s) + HCl(aq) = MgCl2(aq) + H2O(l) + CO2(g) Prectipitation, Acid-base, or Gas-forming? (a) (b) (c)
Asked by Fgyhj - Thu Sep 17 13:40:46 2009 - - 1 Answers - 0 Comments
chemical reactions question?
Q. Hi I have two questions Calculate the volume of 6.0 M nitric acid required to completely dissolve 12.5 g of zinc metal. Refer to the table of Electrochemical Activity. Balance this equation by half reaction. Clearly label each of your half-reactions. Cu(s) +H+(aq)+NO3-(aq) ->Cu 2+ (aq) +NO2(g) +H20(l) (the numbers with a positive/negative signs are the oxidation states) Oh and one more question, whats another metal that will replace zinc metal and reduce copper ions to copper metal?
Asked by gman4free - Fri Oct 17 13:11:10 2008 - - 1 Answers - 0 Comments
A. Balance this equation by half reaction: Cu(s) ->Cu 2+ (aq) + 2 electrons lost (oxidation) NO3-(aq) & 1 electron taken ->NO2(g) (rteduction) balance the electrons, by doubling the NO3)-1 : Cu(s) ->Cu 2+ (aq) + 2 electrons lost 2 NO3-(aq) & 2 electron taken -> 2 NO2(g) combine them: Cu(s) & H+(aq) & 2 NO3-(aq) ->Cu 2+ (aq) & 2 NO2(g) & H20(l) balance the oxygens: Cu(s) & H+(aq) & 2 NO3-(aq) ->Cu 2+ (aq) & 2 NO2(g) & 2 H20(l) balance the Hydrogens: Cu(s) & 4H+(aq) & 2 NO3-(aq) ->Cu 2+ (aq) & 2 NO2(g) & 2 H20(l) === To calculate the volume of 6.0 M nitric acid required to completely dissolve 12.5 g of zinc metal, ... the above equation can be used by substituting Zn for the Cu,... but it needs to be completed,... the 4… [cont.]
Answered by Steve O - Fri Oct 17 13:56:27 2008
Q. Hi I have two questions Calculate the volume of 6.0 M nitric acid required to completely dissolve 12.5 g of zinc metal. Refer to the table of Electrochemical Activity. Balance this equation by half reaction. Clearly label each of your half-reactions. Cu(s) +H+(aq)+NO3-(aq) ->Cu 2+ (aq) +NO2(g) +H20(l) (the numbers with a positive/negative signs are the oxidation states) Oh and one more question, whats another metal that will replace zinc metal and reduce copper ions to copper metal?
Asked by gman4free - Fri Oct 17 13:11:10 2008 - - 1 Answers - 0 Comments
A. Balance this equation by half reaction: Cu(s) ->Cu 2+ (aq) + 2 electrons lost (oxidation) NO3-(aq) & 1 electron taken ->NO2(g) (rteduction) balance the electrons, by doubling the NO3)-1 : Cu(s) ->Cu 2+ (aq) + 2 electrons lost 2 NO3-(aq) & 2 electron taken -> 2 NO2(g) combine them: Cu(s) & H+(aq) & 2 NO3-(aq) ->Cu 2+ (aq) & 2 NO2(g) & H20(l) balance the oxygens: Cu(s) & H+(aq) & 2 NO3-(aq) ->Cu 2+ (aq) & 2 NO2(g) & 2 H20(l) balance the Hydrogens: Cu(s) & 4H+(aq) & 2 NO3-(aq) ->Cu 2+ (aq) & 2 NO2(g) & 2 H20(l) === To calculate the volume of 6.0 M nitric acid required to completely dissolve 12.5 g of zinc metal, ... the above equation can be used by substituting Zn for the Cu,... but it needs to be completed,... the 4… [cont.]
Answered by Steve O - Fri Oct 17 13:56:27 2008
From Yahoo Answer Search: 'balancing equation Cu(No3) (aq)'
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Net Ionic . Equations. : Spectator Ions The . equation. AgNO3(. aq. ) + NaCl(. aq. ) AgCl(s) + NaNO3(. aq. ) is not quite correct, because three salts are dissociated in ions while AgCl is a precipitate. Ag+(. aq. ) + . NO3. (. aq. ) + Na+(. aq. ) + Cl (. aq. ) AgCl(s) + . ... . Cu. Ag Hg Pt Au Examples Complete and . balance. each of the following chemical . equations. . A free and chemically active metal displacing a less active metal from a compound. Mg + FeCl3 Mg + FeCl3 Fe + MgCl2. 3Mg(s) + 2FeCl3(. aq. ) ...
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