How many grams of f are in 145 g of caf2?

The amount of F present in 145 g CaF2 is 35.3 g (≅35 g)

Explanation:

Given:

Mass of CaF2 = 145 g

To determine:

Mass of F present in 145 g of CaF2

Explanation:

Based on the formula stoichiometry for CaF2:

1 mole of Caf2 contains 2 moles of F

Molar mass of CaF2 = Atomic weight of Ca + 2(atomic weight of F)

= 40 + 2(19) = 78 g

Atomic mass of F = 19 g

i.e.  78 g of CaF2 contains 19 g of F

Amount of F present in the given 145 g of CaF2 would be:

b i think it’s a water wheel turning in a stream

i think it is true since you can test the answer and can use observations to complete it.