Question

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 STP) 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. ​

Answer 1

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