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The total number of electrons in 18 mL o...

The total number of electrons in 18 mL of water (density = 1 g `mL^(-1)` ) is

A

`6.02 xx 10^23`

B

`6.02 xx 10^25`

C

`6.02 xx 10^24`

D

`6.02 xx 18 xx 10^23`

Text Solution

Verified by Experts

The correct Answer is:
C
Mass of water ` = 18 mL xx 1g mL^(-1) = 18 g `
or = 1 mol
No. of molecules in 1 mol of water
` = 6.02 xx 10^23`
No. of electrons in 1 molecule of water
= 2 + 8 = 10
` therefore ` No. of electrons in 1 mol of water

` = 6.022 xx 10^23 xx 10 = 6.022 xx 10^24`
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