Composition Determination of a Mixture
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Composition Determination of a Mixture

You are given a sample that contains a mixture of the following two arsenic-containing minerals: ruarsite (RuAsS) and getchellite (AsSbS3). You start with a sample of this mixture that has a mass of 84.56 grams. You perform a reaction that converts the arsenic (As) in these minerals into the form arsenic(III) oxide (As2O3), and 32.26 grams of this product are obtained.

What is the percent by mass of ruarsite in the original sample? (click here if you want step-by-step help to solve this problem)
Please, give all your calculations with three significant figures.

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What is the percent by mass of ruarsite?
% by mass

Hint