Chapter 3 Sections 1-7 Review Worksheet #1
1. Name the following compounds:
K2S
(NH4)3PO4
CuBr2
BrF3
P2F4
2. Give the formula for each
of the following compounds:
calcium iodide
cobalt(II) sulfate
aluminum phosphate
xenon difluoride
3. What is the molar mass of methane CH4?
4. What is the mass of 9 moles of fluorine molecules?
5. 102 grams of a gas contains 6 moles. What is its molar mass?
6. 15.0 grams of carbon contains how many atoms? (Show conversion factors.)
7. What is the mass of 9.9x1024 atoms of He? (Show conversion factors.)
8. How many grams are there in one mole of benzene C6H6?
9. How many moles of nitrogen atoms are there in 6 moles of TNT (trinitrotoluene
CH3C6H2(NO2)3)?
10. What is the molar mass of TNT?
11. Calculate the number of moles in 1.00g of aspirin (C9H8O7)
12. What is the mass of lead present in 10.0g of PbS? (Hint: you have to use percent
composition to answer this questions.)
13. How many moles are present in 128 g of sulfur dioxide?
14. What is the percent by mass of nitrogen in ammonium nitrate?
15. What is the percent by mass of phosphorus in calcium phosphate?
16. What is the percent by mass of oxygen in strontium acetate?
17. What is the mass of 6.0 moles of nitric acid, HNO3?
18. 58.2 grams of a gas contains 4 moles. What is its molar mass?
19. How many moles of oxygen atoms are there in 5 moles of aspirin (acetylsalicylic
acid CH3CO2C6H4COOH
20. How many moles are present in 1340 g of xenon tetroxide?