The daily allowance of vitamin C for children aged four to eight is 1.42 x 10^-4 mol. If its molar mass is 176.124 g/mol, what mass is this?

1. Mass is obtained by multiplying the amount in moles by the molar mass. 2. That gives 1.42 x 10^-4 mol x 176.124 g/mol. 3. The product is 0.0250 g of vitamin C. 4. As a check, one ten thousandth of a mole should weigh roughly one ten thousandth of 176 g, near 0.02 g. 5. The value 0.00806 g comes from dividing by the molar mass rather than multiplying by it. _Source: OpenStax Chemistry (CC BY 4.0), Ch 3 "Composition of Substances and Solutions", section 3.1 Formula Mass and the Mole Concept_