5.1k views
0 votes
How many molecules are there in 15 grams of fef3? ​

1 Answer

4 votes

Step-by-step explanation:

Fe= 55.8 F=18.9

FeF3 = 55.8 + (18.9×3)

= 55.8 + 56.7

= 112.5

Therefore 1 mole of FeF3 = 112.5g

If 1 mole = 112.5, the 15 moles = x

1 mole = 112.5g

x mole = 15g

~cross multiply~

x = 15 ÷ 112.5

x = 0.133 (recurring decimal)

Therefore, there are 0.133 moles in 15g of FeF3

User Kendall Frey
by
8.1k points