Question

no of atoms on iron rod whose weight is 2.8gm​

Answer 1

Answer:

Since atomic mass of Fe = 56amu, molar mass of Fe=56g. using the formula: no. of moles = given mass/ molar mass

Explanation:

hope that helps you

Answer 2

ANSWER

ATOMIC MASS OF IRON 56 g

so , 56 g contain 1 mol of fe atom

1 g contain.........1 /56 mol atom

2.8g contain ...... 1/56 × 2.8 mol atom

= 0.05 mol atoms

= 0.05× 6 × 10^23 atoms

= 0.3 × 10^23 atoms

hope it helps

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