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Mass Percent
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Mass Percent
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3. Chemical Reactions / Mass Percent / Problem 4
Problem 4
The composition of gold alloys is described using the karat scale based on mass percentages. Determine the karat number of an alloy made up of 24.4 mol% gold and 75.6 mol% copper. Predict the color of the alloy using the figure below.
A
12 karat Au, yellowish
B
12 karat Au, reddish
C
14 karat Au, yellowish
D
14 karat Au, reddish
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