Question

Number of molecule present in 8g of h2

Answer 1

Hey MATE!

1 molecule of H2 has 6.023 * 10²³ atoms and weighs 2 gm.

Therefore, 2 gm. H2 has 1 mole molecules.

Similarly , 1 gm H2 has 1/2 moles mole molecules.

Therefore, 8 gm has 8 * 1/2 => 4 moles molecules.

Or 4 × 6.023 × 10²³ = > 12.092 × 10²³ Molecules.

Hope it helps

Hakuna Matata :))

Answer 2

as their is 6.022x10^23 molecules in 1 mole .And h2 measures 2 gm in 1 mole .
No. Of moles=given weight / molecular weight .Therefore no. Of moles here are =8/2 =4 moles
Now no. Of molecules =6.022x10^23 x 4=24.088x10^23 molecules