A) \[\frac{18}{22.4}\times {{10}^{23}}\]
B) \[55.5\times 6.023\times {{10}^{23}}\]
C) \[\frac{6.023}{23.4}\times {{10}^{23}}\]
D) \[18\times 6.023\times {{10}^{23}}\]
Correct Answer: B
Solution :
1 mole of water means 18 gms of water which means \[6.023\times {{10}^{23}}\] molecules 1 litre of water means 1000 gms 1000 gms of water \[=\frac{1000}{18}\text{mole}\] \[=\frac{1000}{18}\times 6.023\times {{10}^{23}}=55.5\times 6.023\times {{10}^{23}}\]
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