The mass of 2.50 moles of calcium fluoride (caf2) is how many grams ?

195.199grams

Explanation:

Fluorine has a molar mass of 18.99984 while calcium has a molar mass of calcium is 40.08.

1 mole of  calcium fluoride has a mass of 40.08+2×18.99984

=78.0797 grams

if one mole has a mass of 78.0797 grams, then 2.5 moles have:

2.5 moles× 78.0797 grams/mole= 195.1992 grams

1 a

2 d

3 a

4 c

explanation:

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