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QUESTION

# What is the percent composition of chromium in BaCrO4?

20.5% Cr.

BaCrO_4 is 20.5% Cr

I found this answer by adding up the mass of one mole of Cr and placing that number in the numerator. Then, total up the mass of BaCrO_4 and place that mass in the denominator. Solve and then you have your answer.