# chem

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The American Dental Association recommends that an adult female should consume 3.0mg of flouride per day to prevent tooth decay. If the flouride is consumed as sodium flouride (45.24% F)what amount of sodium flouride contains the recommended amount of flouride in mg?

• chem -

3 mg F x (1 g/1000 mg) x (1 mol F/19.0g F) x (1 mol NaF/1 mol F) x (42 g NaF/1 mol NaF) = xx
Check my thinking and look carefully at each term I've used. I initially inverted some of them.

• chem -

The answer above is in grams. You will need to convert it to mg. Also, check the atomic and molar masses.

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