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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.