Question

What is the average molecular weight of a gas containg 20% of N ( molecular weight 28) and 80% of So2 ( molecular weight 64) ??

Answer 1

Answer:

Explanation:

Average molecular mass equals to total mass upon total no. Of moles

So here

Let the total mass be 100 g out of which 20 g is nitrogen and the rest 80 g is SO2 .

Therefore total mass be 100g.

Total moles is equal to moles of N plus moles of SO2.

Moles equals to givan mass upon total molar mass

So moles of N equal to 20/28 and moles of SO2 equals to 80/64.

This implies 5/7 plus 5/4

That is (20+35)/28

Whih gives 55/28

Equals to 1.9

Which is approximately equal to 2.

So average molecular mass equals to 100/2 which equals to 50 g.

This is your answer.......

Hope it helps.....

Answer 2

Explanation:

i hope this

explanation helps you