Question

Calculate number of
moles of sodium and
oxygen atoms required to form
0.5 mole of Na2S04
م​

Answer 1

Explanation:

1 mole of KHSO

4

contains 4 moles of oxygen atoms.

0.5 mole of KHSO

4

contains 0.5×4=2 moles of oxygen atoms.

Number of oxygen atoms is obtained by multiplying number of moles of oxygen atoms with Avogadro number which is 6.023×10

23

. The number of oxygen atoms =2×6.023×10

23

=1.2×10

24

.

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