Mass Percent
3. Chemical Reactions / Mass Percent / 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 triangular diagram showing the color variations of gold alloys based on mass percentages of gold, copper, and silver.](https://lightcat-files.s3.amazonaws.com/problem_images/29a290f5fd6fe3de-1665498007656.jpg)
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