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

more_vert
4) solve problems

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

more_vert

verified

Given : volume of hydrogen at STP =0.448 L

To find : number of moles of hydrogen

Formula : number of moles of a gas =$${Volume\space of \space a \space gas\space at \space STP \over Molar \space volume \space of \space gas}$$

Solution :

number of moles of a gas =$${Volume\space of \space a \space gas\space at \space STP \over Molar \space volume \space of \space gas}$$

=$$0.448 \over 22.4$$          ---{ volume of gas at stp = 22.4 dm3 mol-1

=0.02 mol

$$\therefore$$ number of moles of hydrogen in  0.448 L at STP is = 0.02 mol