Question

A complex of iron contains 45.6% iron by mass.
number of iron atoms present in 15.0 g of this complex

​

Answer 1

Explanation:

Given percentage by mass of Fe in the compound = 45.6%That means 100g of the substance contains 45.6g of Fe, So 5g of the substance will contain x grams of fe.

=>x=(45. 6×5)/100=2.28g

Now no. Of atoms =moles×avogadro no.

=>no. Of atoms =(given mass of fe/molar mass

Of fe) ×6.02×10²³

(2.28/56)×6.02×10²³

2.450×10²² atoms of fe.

Answer 2

Answer:

Hey hope you will get with this!!!