Determine the relative molar mass of the gas if its relative density for oxygen is 2.

univerkov | November 18, 2020 | education

given:
DO2 = 2
to find:
Mr (gas)
decision:
1.by the formula DO2 = Mr (gas): M (O2)
2.molecular mass of oxygen
M (O2) = 16 * 2 = 32g / mol
3.Substitute
Mr (gas) = DO2 * M (O2)
Mr (gas) = 2 * 32 = 64g / mol
answer: 64g / mol

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