a gas of mass 32g has vol. of 20litres at STP. calculate the gram molecular weight of the gas

 

Asked by Shrey | 31st Jan, 2018, 01:37: PM

Expert Answer:

Mass space of space straight a space gas space equals space 32 space straight g

Volume space occupied space by space 32 space straight g space of space gas space equals space 20 space lit

No. space of space moles space equals fraction numerator Volume space of space straight a space gas over denominator 22.4 end fraction

space space space space space space space space space space space space space space space space space space space space space space space space space space equals space fraction numerator 20 over denominator 22.4 end fraction

space space space space space space space space space space space space space space space space space space space space space space space space space equals space 0.9 space moles

Gram space molecular space weight space of space gas space equals fraction numerator Mass space of space gas over denominator No. space of space moles end fraction

space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space fraction numerator 32 over denominator 0.9 end fraction

space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals space 35.55 space straight g

Gram space molecular space weight space of space gas space equals space 35.55 space straight g.

Answered by Varsha | 31st Jan, 2018, 05:20: PM