Question

Two non reactive monoatomic ideal gases have their atomic masses in the ratio

Answer 1

We have

PV = nRT

or

PM = ρ  

ρ

RT

ρ 1 ρ 2  =(P 1 P 2  )(M 1 M 2  )  

ρ1ρ2=(P1P2)(M1M2)

ρ 1 ρ 2  =23 ×43  

ρ1ρ2=23×43

ρ 1 ρ 2  =89  

ρ1ρ2=89