Question

The mass unit associated with density is usually grams. If the volume (in mL or cm3 ) is multiplied by the density ( g/mL or g/cm3 ) the volume units will cancel out, leaving only the mass units. Keep in mind that the volume and density must use the same volume unit for the cancellation.

If a large marshmallow has a volume of 2.50 in3 and density of 0.242 g/cm3 , how much would it weigh in grams? 1 in3=16.39 cm3 .

Answer 1

See attached image. You need to set it up, so the units cancel, and you are left with only grams. The raw answer is 9.91595 g, however with only 3 significant figures, the answer is rounded to 9.92 g