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    Exam 3: Calculations With Chemical Formulas and Equations
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    An Ore Sample Is Found to Contain 10
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An Ore Sample Is Found to Contain 10

Question 26

Question 26

Multiple Choice

An ore sample is found to contain 10.500000 g of cobalt and 87.3 g waste rock (gangue) .What is the percent by mass of cobalt in the ore?


A) 10.7 %
B) 12.114 %
C) 0.107 %
D) 0.12228 %
E) 1.2879 %

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