1. A piece of metal with a mass of 15.45 g is added to 21.27 mL
of water in a graduated cylinder. The water level rises to
24.78 mL. The density of the metal
is _________ g/mL.
Hint: You need to apply the significant figure
rule for subtraction first; then apply the significant figure rule
for division. Do not round until the end!
Enter your answer as number without a
unit.
2. A rectangular block of copper metal weighs 1896 g. The
dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm. The
density of the copper metal
is __________ g/cm3.
Hint: You need to apply the significant figure
rule for multiplication and division. Do not round until the
end!
Enter your answer as number without a
unit.
3. Pancake syrup has a density of 1.37
g/cm3. A student measures the density of pancake
syrup in the laboratory and obtains a value of 1.42
g/cm3. The students percent error
is _________ percent.
Hint: You need to apply the significant figure
rule for subtraction first; then apply the significant figure rule
for division. Do not round until the end!
Enter your answer as number without a unit.
(Example: 2; 2.1; 2.20)
4. Using water displacement, a student measures the density of
15 small iron nails as 7.86 g/mL. The density of a single
iron nail is __________ g/mL.
Enter your answer as number without a
unit.