Question

5.6 l of the monoatomic gas have weight 1g at STP then atomic weight of the gas is?

Answer 1

SOLUTION-;

• 5.6 litre of the gas have 1 g weight at STP Then atomic weight of the gas
• the weight of 5.6 litres of a gas at S.T.P. is 11 grams. This means that 5.6 litres of a gas at S.T.P. weigh 11 grams. So, the weight of 1 litre of the gas at S.T.P. is equal to 115.6 g.

Answer 2

Given: 5.6 l of the monoatomic gas weight 1g at STP.

To find: We have to find the atomic weight of the gas.

Solution:

To determine the atomic weight of the gas we have to follow the below steps-

We know that at STP one mole of gas occupies a volume of 22.4 litres.

One mole of any gas is equal to the atomic weight of the gas.

5.6 litre of the monoatomic gas weight 1g.

Thus 22.4 litres of the monoatomic gas weights 22.4/5.6=4g.

So, the atomic weight of the gas is 4g.