A) \[6.023\times {{10}^{23}}\]molecules
B) \[1.376\times {{10}^{26}}\]molecules
C) \[1.344\times {{10}^{18}}\]molecules
D) \[4.346\times {{10}^{20}}\]molecules
Correct Answer: C
Solution :
\[\because \] 22400 ML water contains water molecules\[=6.023\times {{10}^{23}}\] \[\therefore \] In 1 ML, the number of water molecules \[=\frac{6.023\times {{10}^{23}}}{22400}\]Since, 1 ML contains 20 drops, therefore, number of water molecules in 1 drop \[=\frac{6.023\times {{10}^{23}}}{22400\times 20}\] \[=1.344\times {{10}^{8}}\,\]molecules
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