Question

At S.T.P. weight of 1litre of gas is 1.25gram.That gas will be..<br />(a)N2<br />(B) co<br />(c) C2H4<br />(D) All​

Answer 1

Answer:

At STP weight of 1 litre of a gas is 1.25grams. The gas will be: 

A

N2

B

CO

C

C2H4

D

All

MEDIUM

Share

Study later

ANSWER

1 litre of a gas at STP weighs 1.25 grams.

22.4 litres (1 mole) weighs about x grams.

x=1.25×22.4=28 grams.

All the molecules are having molecular weight of 28 grams.

Hence option D is correct.