Question

Calculate the no.Of electrons present in 100g of water

Answer 1

H- 2*1 electrons

O- 8 electrons

so 1 atom of H2O= 8+2 = 10 electrons

18 g of water has 6.023*10^23 atoms

so....100 g of water has = 602.3*10^23 atoms

1 atom= 10 electrons

so.... 602.3*10^23 atoms= 6023*10^23 electrons

hope it helps..

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Answer 2

mole of water is equal to 18 g of H2O which is 6.023*10^23 molecules of water and also in each molecule of water there are 10 electrons(8 electrons from oxygen atom and 1 electron from each of the two hydrogen atoms).