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Chapter 3: Q.7E (page 166)

Write a sentence that describes how to determine the number of moles of a compound in a known mass of the compound if we know its molecular formula.

Short Answer

Expert verified

The number of moles of a compound is the ratio of the given mass and the molecular mass.

Step by step solution

01

Number of moles of a compound

To determine the number of moles of any compound, we have to divide the given mass of a compound by its molecular mass. The sum of the atomic mass of each element is known to be the molecular mass of a compound.

Therefore, the number of moles of the compound can be written as:

\({\rm{Number of moles = }}\frac{{{\rm{Given Mass}}}}{{{\rm{Molecular mass}}}}\)

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