Answer to Question #257923 in Other for Rosebell

Question

1. A 100 g of black gold, a gold-cobalt alloy used in jewelry. It contains 75 g of gold and 12.5 g of cobalt. Calculate for the percentage by mass of cobalt in black gold. Solution: Step 1: Identify what is required to find in the problem. Step 2: Identify the given in the problem. Step 3: Write the working equation. Step 4: Substitute the given values. Step 5: Find the answer. Therefore, the percentage by mass of cobalt in black gold is ______________

Answer 1

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