Question

find the mass of 1 lit of H2 gas in STP is​

Answer 1

Explanation:

At STP 1 liter= 1mole

we know mass = molecular mass of H2 × no. of mole

2 × 1 = 2

therefore mass = 2g

Answer 2

Answer: 0.089 gm

Explanation: At STP condition, we know that 22.4 litres is 1 mole.

1 mole weighs 2gm of H2.

So , 1 litre is 1/22.4 moles of hydrogen gas.

So the weight is 2/22.4 gm

=0.089 gm