Question

A chemist has a jar containing 388.2 g of iron filings. How many moles of iron (Fe) does the jar contain?

Answer 1

Answer:

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Answer 2

Answer:

6.93 moles or 7moles (approx.)

Explanation:

No. of moles(n) = Given mass(m)/Molar Mass(M)

Atomic mass of Fe = 56u

Molar mass of Fe = 56g

Given mass = 388.2g

Therefore, n = 388.2g/56g

= 6.93 moles

=7moles(approx.)