Tin (ii) fluoride (snf2) is often added to toothpaste as an ingredient to prevent tooth decay. what is the mass of f in grams in 36.5 g of the compound?

From the periodic table:

molar mass of Sn = 118.71 grams

molar mass of F = 18.99 grams

This means that:

molar mass of SnF2 = 118.71 + 2 (18.99) = 156.69 grams

Therefore, 156.69 grams of SnF2 contains 37.98 grams of F. To know the amount of F in 36.5 grams of the compound, we will simply do a cross multiplication as follows:

mass of F = (36.6 x 37.98) / 156.69 = 8.847 grams