What is the mass of a pure platinum disk with a volume of 113 cm3? The density of platinum is 21.4 g/cm3.Give your answer in grams and kilograms.
Answers
The mass of the platinum if the volume is 113 cm³ and density is 21.4 g / cm³ is 2.418 kilograms or 2 kilograms and 418 grams.
What is density?
The density is the mass of a material substance per unit volume. d = M/V, where d is density, M is mass, and V is volume, is the formula for density. Grams per cubic centimeter are a typical unit of measurement for density.
As an illustration, the density of Earth is 5.51 grams per cubic centimeter, whereas the density of water is 1 gram per cubic centimeter.
Given:
The volume of the platinum disk, V = 113 cm³,
The density of platinum, d = 21.4 g / cm³
Calculate the mass using density and mass relation as shown below,
density = Mass of the platinum / Volume of the platinum
21.4 = Mass of the platinum / 113
Mass of the platinum = 21.4 × 113
Mass of the platinum = 2418.2 g
As we know 1 kg = 1000 grams,
Mass of the platinum = 2418.2 / 1000
Mass of the platinum = 2.418 kg
Thus, the mass of the platinum is 2.418 kg.
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