Calculate number of moles of hydrogen in 0.448 litre of hydrogen gas a

1.	Calculate number of moles of hydrogen in 0.448 litre of hydrogen gas at STP.
Answer» Given : Volume of hydrogen at STP = 0.448 L To find : Number of moles of hydrogen Formula : Number of moles of a gas(n) = \(\frac{Volume\,of\,gas\,at\,STP}{Molar\,volume\,of\,a\,gas}\) Molar volume of a gas = 22.4 dm³ mol^-1 = 22.4 L at STP Number of moles of a gas(n) = \(\frac{Volume\,of\,gas\,at\,STP}{Molar\,volume\,of\,a\,gas}\) = \(\frac{0.448\,L}{22.4\,L\,mol^{-1}}\) = 0.02 mol. ∴ Number of moles of hydrogen = 0.02 mol

Calculate number of moles of hydrogen in 0.448 litre of hydrogen gas at STP.

Answer»

Given : Volume of hydrogen at STP = 0.448 L

To find : Number of moles of hydrogen

Formula :

Number of moles of a gas(n) = \(\frac{Volume\,of\,gas\,at\,STP}{Molar\,volume\,of\,a\,gas}\)

Molar volume of a gas = 22.4 dm³ mol^-1 = 22.4 L at STP

Number of moles of a gas(n) = \(\frac{Volume\,of\,gas\,at\,STP}{Molar\,volume\,of\,a\,gas}\)

= \(\frac{0.448\,L}{22.4\,L\,mol^{-1}}\)

= 0.02 mol.

∴ Number of moles of hydrogen = 0.02 mol