# Science

What is the percent yield of copper when 14.0g of Cu2O reacts with Cu2S and 12.3 grams of copper is recovered? Round to two decimal places and do not use a percent sign in your answer.

2Cu2O + Cu2S → 6Cu + SO2

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1. What is 12.3/14.0 * 100. Round to two decimal places. 85.86?

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