How many electrons does 250 ml of water contains?

Answer 1

As you know the density of pure water is 1 g/ml. so the mass of 250 ml water is 250 g.

Now the no of molecules of water present in 250 g of water = 250 x 6 x 1023/18 = 8.33 x 1024

Now each molecule of water contains total 10 electron. So total no. of electrons in 250 g of water are 10 x 8.33 x 1024 = 8.33 x 1025 electrons.