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A mixture of C2H2 and CH4 has a total mass of 234.1 g. When this mixture...

A mixture of C2H2 and CH4 has a total mass of 234.1 g. When this mixture reacts completely with excess oxygen, the CO2 and H2O products have a combined mass of 1009.8 g. What mass of C2H2 was present in the initial mixture?

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