Question

to calculate the percent of a total mixture, divide the mass of __ by the mass of __ and multiply by 100%.
one substance; the mixture of solids
the mixture of solids; one substance

Explanation:

To calculate the percentage of a component in a mixture, we use the formula: \(\text{Percentage}=\frac{\text{Mass of one substance}}{\text{Mass of the mixture}}\times100\%\). So we divide the mass of one substance by the mass of the mixture (which can be a mixture of solids, liquids, etc.).

Answer:

one substance; the mixture of solids