Answer to Question #202317 in General Chemistry for Travis

Question #202317

A welding fuel gas contains carbon and hydrogen only. Burning a small sample of it in oxygen gives 3.38 g carbon dioxide, 0.690 g of water and no other products. A volume of 10.0 L (measured at S.T.P.) of this welding gas is found to weigh 11.6 g. Calculate (i) empirical formula, (ii) molar mass of the gas, and (iii) molecular formula.


1
Expert's answer
2021-06-03T05:27:21-0400

i) The empirical formula of the welding fuel gas is CH.

ii) Molar mass of the gas =26g/mol

iii) The molecular formula is 2(CH)=C2H2



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