Answer :

Given:


Mass of water ,


Molar mass of water


Moles of water in 100g of water =


Number of electrons in 1 molecule of water = 2 times one electron each in hydrogen atom + 8 electrons in oxygen atom = 10 electrons


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Formulas used:


The relation between molar mass M, mass of sample m and number of moles of sample n is given by:



1 mol of “something” contains NA number of “something”.


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Number of electrons in 1 mol of electrons =


Number of electrons in 100 g of water





Negative charge on one electron =


Total negative charge


We have,


Charges:


Distance of separation,


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Formula used:


By Coulomb’s law, the electric force is given by:



Where ϵ0 is the permittivity of free space


k is the electrostatic constant


q1 and q2 are the magnitude of charges


r is the distance of separation between the charges


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The magnitude of electric force is:





Let my mass m be 70 kg.




The electric force between the two charges is about 1022 times my weight!


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