Question

what is the weight of 4gms of hydrogen at STP

pls tell briefly

Answer 1

Answer:

The molar massess of H2 and He are 2/g mol and 4g/ mol respectively. 4gofH2 corresponds to 2g/mol4g=2moles. 4 g of he correspond to 4g/mol4g=1mole. At STP, 1 mole of any gas occupies a volume of 22.4 L and contains Avogadro number (6.

Answer 2

Answer:

AS,

0.25gms

Number of molecules of hydrogen will be equal to the number of molecules of oxygen. From this, we conclude that 0.25gms of hydrogen at STP is present in a vessel which can hold 4 grams of oxygen under similar conditions.

SO,

4gms will be

The molar massess of H2 and He are 2/g mol and 4g/ mol respectively. 4gofH2 corresponds to 2g/mol4g=2moles. 4 g of he correspond to 4g/mol4g=1mole. At STP, 1 mole of any gas occupies a volume of 22.4 L and contains Avogadro number (6.