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Calculations involving masses

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Question 45

A heavy paraffin molecule, W, is thermally cracked in a refinery to produce one molecule of hexane, C6H14C_6H_{14}C6​H14​, and one molecule of an alkene, Z.

W→C6H14+Z W \rightarrow C_6H_{14} + Z W→C6​H14​+Z

The relative formula mass (MrM_rMr​) of Z is 112. The empirical formula of Z is CH2CH_2CH2​.

Deduce the molecular formula of the reactant paraffin W.

Show your working.

(Relative atomic masses: H=1.0H = 1.0H=1.0, C=12.0C = 12.0C=12.0)

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Calculations involving masses Questions

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