A large balloon used to sample the upper atmosphere is filled with 320 m3 of hydrogen. What is the mass of the hydrogen (in kg)?

Answer 1

Solution:

The Density ρ of hydrogen is ρ = m / v , the mass m = ρ v , the volume v is given as 320 m³ so you need the density of hydrogen in upper atmosphere or lower pressure in kg/m³. In most textbooks it is 0.0887 kg/m³

The mass m = 0.0887 kg/m³ ( 320 m³) = 28.4 kg