Question

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

Answer 1

Answer:

$\% Co=10.7\%$

Explanation:

Hello!

In this case, since this is a mixture composed by cobalt and waste rock, we can compute the percent by mass of cobalt as shown below:

$\% Co=\frac{m_{Co}}{m_{Co}+m_{waste}} *100\%$

Thus, we plug in to obtain:

$\% Co=\frac{10.500000g}{10.500000g+87.3} *100\%\\\\\% Co=10.7\%$

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