Question

Q5 (i) How many gram molecules are present in 4.9g of H2SO4?​

Answer 1

Explanation:

No. of atoms in 4.9g of H

2

SO

4

1moleofH

2

SO

4

⟶6.022×10

23

atoms

No.ofmole=

98

4.9

=

98×10

49

=

20

1

=0.05

0.05moleofH

2

SO

4

⟶0.05×6.022×10

23

atoms

⟶0.3011×10

23

molecules

No. of atoms in 4.9g of H

2

SO

4

=8×3.011×10

22

atoms=2.1×10

23

atoms