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OpenStudy (anonymous):
8.50g of potassium combines with 7.71g of chlorine to form potassium chloride. What is the percent by mass of chlorine in potassium chloride?
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OpenStudy (anonymous):
First, add the two to get the total mass 8.5+7.71 = 16.21 Next, divide the mass of chlorine by the total mass to get the fraction. Multiply by 100 to get the percent. (7.71/16.21) x 100 = 47.56%
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