A mixture of composition 70.0% methane (CH4) and 30% ethane (C2H6) The 37. by mass is burned in oxygen to produce carbon dioxide and water. reactions that occur are CH4 2 02 > CO2 + 2 H20 2 C2H6 7 02 → 4 CO2 + 6 H20 How many grams of oxygen are needed to react completely with 50.0 grams of the hydrocarbon mixture? a. 86 grams b. 105 grams с. 196 grams d. 294 grams

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