Question

caculate the number of molecules in 96g of oxygen?​

Answer 1

Answer:

Molar mass of Ozone, O3 = 48 g.

Since 48 g of ozone contains 3 oxygen atoms

Thus, 

96 g of ozone will contain 96×348 atoms

= 6 atoms

Hence, 96 g of Ozone contain 6 oxygen atoms.

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Answer 2

Given: 96g of oxygen.

To find: We have to find the number of molecules.

Solution:

The molecular formula of oxygen $O_2$.

The atomic weight of oxygen is 16. Thus the molecular weight of oxygen gas is 16×2=32g.

Thus we can write,

32g of oxygen molecule has $6.023×10^{23}$ number of molecules.

Thus 96g of oxygen molecule has $6.023×10^{23}×96/32=18.069×10^{23}$ number of molecules.

Thus 96g of oxygen molecule has $18.069×10^{23}$ number of molecules.