Name _____________________
Mrs. Rochkind
Grade 10-4
Chemistry
DENSITY AND PERCENT ERROR REVIEW
(with sig digs)
Show all formulas and work and answer with correct units and significant digits.
1. Lead has a density of 11.4 g/cm3. What is the mass of a piece of lead pipe whose volume is 6
cm3 ?
2. A canister of nitrogen has a volume of 51 mL and a mass of 0.00598 g. What is its density?
(answer in scientific notation)
3. If gold's density is 19.3 g/cm3, what would be the volume of a 55g gold bar?
4. The density of air is 1.20 g/L. If a sample of air in a jar weighs 5.0g, what would be the volume
of the air in mL?
5. What is the density of cough syrup in g/cm3 if a sample has a mass of 50.0g and a volume of
52.63 cm3?
6. Ethanol ( ethyl alcohol) has a density of .789 g/cm3. What is the mass in g of a sample of
ethanol whose volume is 158 cm3?
7. A technician experimentally determined the boiling point of octane to be 124.1° C. The
actual boiling point of octane is 125.7° C. Calculate the percent error.
8. A student was measuring the density of aluminum of an aluminum strip. She measured the
density to be 2.65 g/cm3. If the actual density of aluminum is 2.70 g/cm3 , what is her percent
error?