Question

Calculate the no. Of molecules present in 1 deci meter cube of hydrogen

Answer 1

1 deci meter cube = 1 Litre

At STP
6.022 × 10^23 molecules of any gas at occupies 22.4 Litres of Volume
1 Litre of hydrogen gas contains x molecules

x = 6.022 × 10^23 / 22.4
= 2.68 × 10^22 molecules

No. of molecules of present in one decimetre cube of hydrogen at STP is 2.68 × 10^22

Answer 2

Answer:

2.69*10²² molecules

Explanation:

1 mole of H2 at STP......22.4 dm³

1 mole of H2......22.4 dm³...6.022*10²³ molecules

22.4 dm³ of H2....6.022*10²³ molecules

1 dm³ of H2.......6.022*10²³/22.4 = 2.69*10²² molecules