b) Calculate the number of moles, molecules & proton in
64 g of Oz
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Answer:
The molar mass of oxygen = 32 g
⟹ 32 g of O2 contains =6.023×10²³
So, the no. of molecules present in 64 g of oxygen = 6.023×10²³×64/32
=12.046×10²³molecules
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