Practice ExamSupplemental InstructionIowa State UniversityLeader: Katie Course: Chem 1777Instructor: BurnettDate: March 1st, 20101. Complete and balance the following molecular reaction equations. Make sure to include all of the phases and products.Ag3PO4(aq)+KOH(aq)→Circle all of the correct terms describing the above reaction.Combustion combination decomposition metathesisAcid/base neutralization redox exchangeOH ¿2(aq)→H2S O4(aq)+Sr ¿ Circle all of the correct terms describing the above reaction.Combustion combination decomposition metathesisAcid/base neutralization redox exchange2. Write the net ionic reaction equations for the following unbalanced molecular equation.NOAl (¿¿3)3(aq)+3 H2(g)HNO3(aq)+ Al(s)→2 ¿3. Underline the species that is undergoing oxidation in the following reaction.PbS(s) + 4H2O2(aq)→ PbSO4(s)+4 H2O(l)4. All of the following are strong acids except…a) HBrb)H2S O4c)HCld)HClO4e)HI5. Name a weak base.6. Consider the following reaction: 2 Mg(s)+O2(g)→2 MgO(s) ΔH = -397kJa) Is this reaction exothermic of endothermic? b) Calculate the amount of heat transferred when 4.3g of Mg(s) reacts at constant pressure. c) How many grams of MgO are produced during an enthalpy change of -45 kJ? Supplemental Instruction1060 Hixson-Lied Student Success Center v 294-6624 v www.si.iastate.edud) How many kilojoules of heat are absorbed when 5.70g of MgO(s) is decomposed intoMg(s) and O2(g) at constant pressure?7. If 25.8mL of AgNO3 is needed to precipitate all the −¿Cl¿ ions in a 785mg sample of KCl (forming AgCl), what is the molarity of the AgNO3 solution?8. The specific heat of cyclopropane is 8.16 J/g-K. How many J of heat are needed to raise the temperature of 104.8g of cyclopropane from 32.6ºC to 94.5º?9. What is the theoretical yield of precipitate if 0.500 g of solid NaOH is added to 50.0mL of 0.200 molar iron (III) nitrate?10. What is the empirical formula of a compound that is 25.9% N and 74.1%