Practice the steps using a mass calculation The mass unit associated with densit

Question

Practice the steps using a mass calculation The mass unit associated with density is usually grams. If the volume (in mL or cm^3) is multiple by the density (z/mL or g/cm^3) 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 3.25 ln^3 and density of 0.242 g/cm^3, how much would it weigh in grams? 1 ln^3 = 16.39 cm^3. Express your answer In grams to three significant figures.

Explanation / Answer

Volume = 3.25 in^3

But , 1 in^3 = 16.39 cm^3

=> Volume = 3.25 x 16.39 cm^3 = 53.27 cm^3

Density = 0.242 g/cm^3

Mass = volume x density

=> Mass = 53.27 x 0.242 g

=> Mass = 12.89 g

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