Question

Find the value of L-15L find the value of L - 15 l

Answer 1

1 mole of a gas at STP occupies a volume of 22.4 L.

15 L of gas corresponds to

22.4L

15L

=0.67 moles.

(B) 5 L of N

2

gas at STP :

1 mole of a gas at STP occupies a volume of 22.4 L.

5 L of gas corresponds to

22.4L

5L

=0.22 moles.

(C) 0.5 g of H

2

gas (molecular weight 2 g/mol) corresponds to

2g/mol

0.5g

=0.25 moles.

(D) 10 g of O

2

gas (molecular weight 3 g/mol) corresponds to

32g/mol

10g

=0.3125 moles.

Higher is the number of moles of a gas, higher will be its number of molecules.