1. Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate.

2. An aqueous solution of 10.0 grams of ammonium sulfide is mixed with an aqueous soluion of 10.0 grams of copper (II) chloride.

What is the formula of the compound that precipitates?

How many grams of precipitate are formed?

3a.Write a balanced equation for the reaction of manganese metal with nitric acid to produce aqueous manganese(II) nitrate and hydrogen gas.

3b.How would you classify this reaction(precipitation, acid-base neutralization,single displacement,combination, decomposition or combustion?

3c. What compound is getting oxidized

3d. What is the oxidation number of nitrogen in nitric acid?

4.How many liters of oxygen gas at (7.410x10^2) torr and 22.0 deg. Celcius are needed for the complete combustion of (3.73x10^0) moles of propane, C3H8?

C3H8(g) + 5O2(g) = 3CO2+4H2O

5. After (4.340x10^-1)L of Ar at (1.120x10^0)atm and 227 deg. celcius is mixed with (2.99x10^-1)L of O2 at (5.390x10^2) torr and 127 deg. Celcius in a (3.890x10^2) mL flask at 300K. What is the pressure in the flask in atm?

6. Use hess's law to calculate the enthalapy change for the reaction 2WO3(s)+6H2(g) = 2W(s) + 6H2O(g) from the following data

2w(s) + 3O2(g) = 2WO3(s), delta H = -1685.4 kJ

2H2(g) + O2(g) = 2H2O(g), delta H = -477.84 kJ

7. Rewrite the following equation so that deltaH reaction = Delta Hf for the compound; 4PCl3(g) = P4(s) + 6Cl2(g)

8. Identify all the intermolecular forces in (CH3)3N from: ion dipole, H-bonding, dipole-induced dipole, ion-induced dipole, London dispersion, dipole-dipole.

9. What volume (in liters) of 1.75M NaOH do you need to make (5.82x10^2) ml of (6.34x10^-1)M NaOH?