Question: One last question. This time let's try it backwards (i.e., you are given the amount of product and need to calculate the amount of reactants).

One last question. This time let's try it backwards (i.e., you are given the amount of product and need to calculate the amount of reactants). Hint: this is what you will be doing for the activity in class. You are given 8.38 g of an unknown mixture of ethane gas and oxygen gas. You burn the unknown mixture in a sealed container and recover 1.03 g of water as well as carbon dioxide and ethane gas. (v) What was the mass of oxygen gas in the unknown mixture? (w) What was the mass of ethane gas in the unknown mixture? (x) What was the mass percent of oxygen gas in the unknown mixture?

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