# Mass of Fluorine in 24.6g SnF? Toothpaste: A Breakdown

Chapter 3, Problem 3.48

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QUESTION:

Tin(II) fluoride ($$\mathrm{SnF}_{2}$$) is often added to toothpaste as an ingredient to prevent tooth decay. What is the mass of F in grams in 24.6 g of the compound?

QUESTION:

Tin(II) fluoride ($$\mathrm{SnF}_{2}$$) is often added to toothpaste as an ingredient to prevent tooth decay. What is the mass of F in grams in 24.6 g of the compound?

Step 1 of 2

Here, we are going to calculate the mass of F in the compound.

Given that,

Mass of the $$S n F_{2}=24.6 \mathrm{~g}$$

The molar mass of $$S n F_{2}=156.7 \mathrm{~g} / \mathrm{mol}$$

Thus, 1.0 mol of $$\mathrm{SnF}_{2}$$ contains 156.7 g

Similarly,

The molar mass of  F  = 19.00 g/mol

Therefore,

$$\% \text { of } \mathrm{F} \text { by mass }=\frac{2 \times 19.00 \mathrm{~g} / \mathrm{mol}}{156.7 \mathrm{~g} / \mathrm{mol}} \times 100 \%=24.25 \%$$

Thus, the mass of F in the compound = 0.2425 g

Therefore,

The mass of F in g in the $$\mathrm{SnF}_{2}$$ is $$=(24.6 \times 0.2425) \mathrm{g}$$

= 5.97 g

Therefore,the mass of F in g in the $$\mathrm{SnF}_{2}$$ is 5.97 g.

##### Mass of Fluorine in 24.6g SnF? Toothpaste: A Breakdown

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Tin(II) Fluoride in Toothpaste: Dive into the chemistry of Tin(II) Fluoride commonly used in toothpaste to prevent tooth decay. Understand molar mass calculations stoichiometry and determine the fluoride content in a given compound