Q1. How many molecules are present in 20grams of H2O .
Q2. Draw a shell diagram of sodium atom?
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There are 3 atoms in water, 1 oxygen, 2 hydrogen. total molecular weight 18. (assuming all average isotopic weight).
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thanx
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No of molecules present in 18g = 1
No of molecules present in 1g =1/18
No of molecules present in 20g =
1/18×20= 1.1
Is this the answer of h20
yes
But I don't think this qn is valid
yes
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