Help on chemistry review sheet!!!?
Q. my finals are tomrrow and i still need to answer a couple of questions on review sheet please help... What is the molecular formula for... Mercuric Bicarbonate? Ammonium Bicarbonate? Aluminum Bicarbonate? Why can a lump of sugar be used in hot tea but granulated(small crystals) sugar is preferred in iced tea? Potential energy is energy that is stored for later use. Explain where the potential energy is located in an exothermic reaction? Why do foods and fuel have chemical potential energy? 1 answer helps a lot thanks in advance :)
Asked by i am what i am - Wed May 9 22:43:24 2007 - - 3 Answers - 0 Comments

A. I see the first two are answered and are definitely correct...for the last question in an exothermic reaction the reactant(s) recombine to from product(s) and energy(heat,light..) The potential energy is stored in the reactants and through the chemical reaction is released in the for of kinetic energy.
Answered by Josh - Wed May 9 23:08:22 2007

Nomenclature problems...?
Q. I have this review worksheet for finals. This one involves Nomenclature. I just realized I was out of town when these were worked in class and don't have any notes due to Christmas break. Any help is greatly appreciated. Provide the correct chemical name: 1. Cr(IO4)3 2. H2Se 3. H2(S2O3) 4. Mn2(SO3)7 5. Ca(OH)2 6. Ni(CO3) 7. U(C2O4)3 8. Ra3P2 9. H2(SO3) 10. P4P10 11. KBr 12. Cd(SO4) 13. H3(PO3) Chemical Formula: 1. Nitric Acid 2. Hydrosulfuric acid 3. Sulfurous acid 4. Cadmium II Phosphide 5. Samarium III bicarbonate 6. Radium bromate 7. Vanadium IV Carbonate 8. Monosulfur hexachloride 9. Iron III selenate 10. Aluminum III nitrate 11. Diphosphorous pentasulfide 12. Francium nitride 13. Sodium chlorite
Asked by Johnny Deezy - Sun Jan 4 02:27:55 2009 - - 1 Answers - 0 Comments

A. Firs I will answer the second part of the question: 1. HNO3 2. H2SO4 3. H2SO3 4. Cd3P2 5. Sm(HCO3)3 6. Ra(BrO3)2 7. Va(CO3)2 8. SCl6 9. Fe2(SeO4)3 10. Al(NO3)3 11. P2S5 12. FrN 13. NaClO2 About the first part of the question, well, I am not sure if I can do it. My English is not enough to know the nomenclature...
Answered by Marissa W - Sun Jan 4 03:02:15 2009

Chemistry homework help?
Q. Single replacement and double replacement reactions; Instructions: 1. Follow the previous instructions regarding identification of the reaction types, writing correct chemical formulas and balancing the equations. 2. Complex ions are assumed to remain intact and are balanced as complete units. 3. It is convenient to write water as HOH for single and double replacement reactions. please help me with the following questions below, I tried to answer them, some I got some I didn't. I need to balance they chemical equations; 1. Sodium + Water --> Hydrogen Gas + Sodium Hydroxide 2Na + 2HOH --> H2 + 2NaOH 2. Sodium Chloride + Sulfuric Acid --> Hydrogen Chloride + Sodium Sulfate 2NaCl + H2SO4 --> 2HCl + NaSO4 3. Aluminum + Iron (III) Oxide… [cont.]
Asked by Nightmare - Wed Oct 15 20:12:27 2008 - - 1 Answers - 0 Comments

A. 1. OK 2. Sodium Chloride + Sulfuric Acid --> Hydrogen Chloride + Sodium Sulfate 2NaCl + H2SO4 -->HCl & Na2SO4 likely: H2SO4 + NaCl -> HCl + NaHSO4 3. Aluminum + Iron (III) Oxide --> Iron + Aluminum Oxide 2Al + Fe2O3 --> 2Fe + Al2O3 4. Calcium Hydroxide + Magnesium Bicarbonate --> Magnesium Hydroxide + Calcium Bicarbonate Ca(OH)2 + Mg(HCO3)2 --> Mg(OH)2 + Ca(HCO3)2 5. Potassium + Aluminum Chloride --> Aluminum + Potassium Chloride 3K + AlCl3 --> Al + 3KCl 6. Copper + Silver Sulfate --> Silver + Copper Sulfate Cu + Ag2SO4 --> 2Ag + CuSO4 7. Sulfuric Acid + Calcium Phosphate --> ??? + ??? 3H2SO4 + Ca3(PO4)2 --> 2H3PO4 & 3CaSO4 8. Chlorine + Magnesium Bromide --> Magnesium chloride & Bromine Cl2 + MgBr2 --> MgCl2 + Br2 9. Hydrogen… [cont.]
Answered by Steve O - Wed Oct 15 20:54:35 2008