At the same temperature and pressure, the molar mass ratio of two gases is equal to the density ratio. Can you teach me the formula?
Let m be the molar mass, m the mass of matter, p the pressure of gas, V the volume of gas, n the quantity of matter, r the molar constant of gas, which is a constant, t the Kelvin temperature
PV1=n1RT,PV2=n2RT.
N = m / m, where PV1 = (M1 / M1) RT, PV2 = (m2 / m2) rt and density ρ = m / V, then PM1 = ρ 1rt, PM2 = ρ 2rt;
Comparing the two formulas, M1 / m2 = ρ 1 / ρ 2 is obtained