Question

Report all numbers with the correct number of significant figures and units.

1. My son has 21.9 lbs of hot wheel and matchbox cars. If the average density of the cars is 2.34 g/mL, will his cars fit into a bin that is 1.13 ft by 0.804 ft by 0.766 ft? (1 kg = 2.2046 lb, 1 in = 2.54 cm)

4. The apothecaries’ dram was a unit once commonly used by pharmacists. What is the mass, in drams, of my 46.8 lb son? (1 dram = 60 grains, 1 scruple = 1.296 g, 1 grain = 0.05 scruples, 1 lb = 16 oz, 1 oz = 28.35 g)

Answer 1