Part 4 - Percent Error
18.) Experimental value = 1.24 g, Accepted value = 1.30 g
19.) Experimental value = 22.2 L, Accepted value = 22.4 L
20.) A person attempting to lose weight on a diet weighed 175 lb on a bathroom scale at home. An
hour later at the doctor's office, on a more accurate scale, this person's weight is recorded as
178 lb. Assuming that there was no real weight change in that hour, what is the percent error
between these readings?
Part 5 - Density
21.) What is the mass of a sample of material that has a volume of 55.1 cm² and a density of
6.72 g/cm?
22.) A sample of a substance that has a density of 0.824 g/mL has a mass of 0.451 g. Calculate the
volume of the sample.