Question

A weather balloon holds 2,850 cubic meters of helium. The density of helium is 0.1685 kilograms per cubic meter. How many kilograms of helium does the balloon contain? Please round your answer to the nearest whole number. Only enter a numerical value in the answer blank.

Answer 1

480

Explanation:

Took the test and got it right.

Answer 2

`\rho = (m)/(V) \Rightarrow m=\rho V`
ρ - density, m - mass, V - volume


`V=2850 \ m^3 \\ \rho=0.1685 \ (kg)/(m^3) \\ \\ m=2850 \ m^3 * 0.1685 \ (kg)/(m^3) =480.225 \ kg \approx 480 \ kg`

The balloon contains approximately 480 kg of helium.