10-01-2020
Chemistry

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what is the molar mass of a gas if 1.25 g of the gas has a volume of 255 L at STP?

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Eduard22sly Eduard22sly

14-01-2020

Answer: 0.11g/mol

Explanation: 1mole of any gas contains 22.4L at stp.

Xmol of the gas will contain 255L i.e

Xmol of the gas = 255/22.4 = 11.38moles

recall

n = Mass conc. / molar Mass

Molar Mass = Mass conc. / n

Molar Mass = 1.25/11.38 = 0.11g/mol

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