Question

calculate aveeage molar of air contain 70%N2 and 30% O2 , (1)by volume ,(2) by mass​

Answer 1

Answer:

the answer is 60

Explanation:

Average M.M=∑% abundance∑% abundance×M.M

∴37.60=0.70+0.300.70×28+0.30×Munknown

0.3037.60−19.60=Munknown

∴Munknown=60 gm

Answer 2

Answer:

this correct answer 60