Question

calculate the total positive and negative charges in 1 cup of water

Answer 1

Let us consider 1 cup = 250 mL = 250g

We know Density of Water =  (or) 

where g=grams, cc= centimeter cube, mL= mili litre

We know the formula of water is 

Therefore in 18g of  there are 8 protons and 8 electrons.

=> The number of protons and electrons each in 250 g of water are 

=> There are 111 protons and 111 electrons in 250 mL of water

We know charge of 1 electron =  and

charge of 1 proton =  

Therefore 

positive charge in a cup of water = 

and

positive charge in cup of water =