A) \[4.346\times {{10}^{20}}\]molecules
B) \[1.344\times {{10}^{18}}\]molecules
C) \[1.376\times {{10}^{26}}\]molecules
D) \[6.023\times {{10}^{23}}\]molecules
Correct Answer: B
Solution :
As 22400 ml of water contains \[6.023\times {{10}^{23}}\] molecules. So 1 ml of water contains\[=\frac{6.023\times {{10}^{23}}}{22400}\]molecules = 20 drops Hence 1 drop of water will contain \[=\frac{6.023\times {{10}^{23}}}{224\times 2\times {{10}^{3}}}\] \[=1.344\times {{10}^{18}}\]molecules Hence, the correct option is (b).
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