Anggap oksigen (M= 32 g/mol) berkelakuan seperti gas ideal, hitunglah massa jenis oksigen pada keadaan normal?

TKG

gas oksigen
Mr = 32 gr/mol
keadaan standar (STP)
- P = 1 atm
- T = 0 °C = 273 K
ρ = ___?

persamaan keadaan gas ideal
P V = n R T
P V = (m / Mr) R T
P Mr = (m / V) R T
P Mr = ρ R T
ρ = P Mr / (R T)
ρ = 1 • 32 / (0,083 • 273)
ρ = 1,43 gr/L = 1,43 kg/m³ ←