3. Chemical Reactions
Mass Percent
17PRACTICE PROBLEM
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.
![](https://lightcat-files.s3.amazonaws.com/problem_images/29a290f5fd6fe3de-1665498007656.jpg)
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.