Complete the following questions on a separate sheet of paper.
1. Calculate the molar mass of calcium phosphate, Ca3(PO4)2
2. Calculate the molar mass of rutile, TiO2, a mineral used in coloring glass.
3. Caculate the molar mass of baking soda, NaHCO3.
4. Calculate the molar mass of acetylene, a gas used in welding (C2H2).
5. Calculate the molar mass of water.
6. The mineral greenockite is a rare yellow sulfide of cadmium that is 78.0%
cadmium and 22.0%.
7. What is the empirical formula for a compound that is 32% aluminum and 68%
fluorine?
8. What is the empirical formula for a compound that is 26.56% potassium, 35.41%
chromium, and 38.03% oxygen?
9. How many atoms are present in 0.923 moles of tin?
10. How many moles are equivalent to 1.974 X 1014 calcium atoms?
11. Carbon-12 with a mass of 12.01 amu makes up 98.90% of existing carbon.
Carbon-13, with a mass of 13.003 amu, makes up 1.10%. What is the average
atomic mass?
12. Determine the mass in grams of 2.65 moles of tellurium.
13. Determine the amount of moles represented by 245 g of oxygen.