An Ore Sample Is Found to Contain 10

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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