Bronze is an alloy (a mixture of metals) of copper (Cu) and tin (Sn)

Chemistry Sep 11, 2020

Bronze is an alloy (a mixture of metals) of copper (Cu) and tin (Sn). A sample of brinze is analysed and found to contain 8.0% tin by mass. Therefore, in this sample, the ratio of copper atoms:tin atoms (Cu/Sn) is?

Expert Solution

In these types of quesitons, it is best to take 100 grams of your compound..... in this case take 100 grams of bronze.

We know that in this 100 grams, 8 grams are tin, and 92 grams are copper.

We can now find the moles of each by dividing by their respective molar masses (on the periodic table) and then set up the quotient in the question.

Answer should be close to 21.

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