Question

How many grams do 7.15 moles of Fe have?

Answer 1

1 mole of
`Fe` atoms is
`56` grams.

To find
`7.15` moles of
`Fe` atoms, we make a direct proportion.

• 
  `1` moles =
  `56` grams;
• 
  `7.15` moles =
  `56* (7.15)=400.4` grams.