One mole is the amount of substance that contains as many elementary particles as 12 g of `_^12C` isotope of carbon. Calculate the number of moles in 1 litre of water `("Density of water is "lg//mL)`. Also calculate the number of water molecules in 1 litre of water

Explanation

Number of moles = `"Mass of the substance"/"Gram molecular mass"`Number of moles in litre of water =`(1000g)/(18g)=55.55` Number of water molecules in litre =`55.55xx6.022xx10^23=334.5xx10^23=3.345xx10^25`