Question

1.Calculate the number of atoms in each of the following samples:
(a) 3.4 moles of nitrogen atoms (b) 23g of Na (d) 5g of H atoms

2.Calculate the mass of the following:
(a) 3.24 x 1018 atoms of iron
(b) 2 x 1010 molecules of nitrogen gas
(c) 1 x 1025 molecules of water
(d) 3 x 106 atoms of Al​

Answer 1

Answer:

1.no.of atomes =no of moles / mass of the component.

2.mass =no of moles /no .of atomes.

Answer 2

Answer: above picture is Q.no.1 ans

2nd picture is Q.no.2

and

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