How many grams are in 4.5 moles of NaF?

Answer 1

You can find the mass of Sodium Fluoride (NaF) by multiplying the number of moles by the molar mass. To calculate the molar mass, you need to look up both sodium and fluorine in the Periodic Table and adding the atomic mass number of each.

Sodium = Na = 22.99 grams/mole

Fluorine = F = 19.00 grams/mole

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Sodium Fluoride = NaF = 41.99 grams/mole

(41.99 grams/mole) x (4.5 moles) = 190 grams (we round to 2 significant figures since you start with 2)

Answer 2

Calculate formula mass of NaF 23,0 + 19.0 = 42 g/mole

4.5 mole x 42 g/mole = grams of NaF