A 9 karat gold bar is made up of 37.5% gold and 62.5% copper by volume. The total volume of the gold bar is 3.02 × 10-6 m3.
What is the total mass of the gold bar?
⍴gold = 1.93 × 104 kg m-3
⍴copper = 8.96 × 103 kg m-3
85.3 g
38.8 g
21.8 kg
16.9 kg
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