Question

calculate the no. of moles from 4.48 litres of H2 gas S.T.P

Answer 1

Since we know 1 mole of gas at STP occupy 22.4 litres of volume
therefore moles of gas contained by 4.48 litres
= 4.48/22.4
= 0.2 moles.

Answer 2

44.8 litres

Molar volume = 22.4 litres

No: of moles = Given volume / Molar volume
= 44.8 / 22.4 = 2 moles

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