1.

The number of water molecules present in a drop of water (volume 0.0018 mL) density =\[18m{{L}^{-1}}\] at room temperature is

A. \[1.084\times {{10}^{18}}\]
B. \[6.023\times {{10}^{19}}\]
C. \[4.84\times {{10}^{17}}\]
D. \[6.023\times {{10}^{23}}\]
Answer» C. \[4.84\times {{10}^{17}}\]


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