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How many molecules of water and oxygen atoms are present in 0.9g of water? |
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Answer» SOLUTION :Gram-molecular mass of water =18g Number of moles in 0.9g of water `=(0.9)/(18)=0.05` Number of water molecular in one mole of water =18g Number of moles in 0.9g of water `=(0.9)/(18)=0.05` Number of water MOLECULES in one mole of water `=6.02xx10^(23)` Number of molecules of water in 0.05 moles. `=0.05xx6.02xx10^(23)` `=3.010xx10^(22)` As one molecular of water contains one oxygen atom. So, number of oxygen ATOMS in `3.010xx10^(22)` molecule of water `=3.010xx10^(22)` |
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