How many moles of solute particles are present in one litre of 10^(-4)

1.	How many moles of solute particles are present in one litre of 10^(-4)MK_(2)SO_(4)?
Answer» Solution : In`10^(-4)MK_(2)SO_(4)` solution, there are `10^(-4)` moles of potassium SULPHATE. `K_(2)SO_(4)` MOLECULE contains 3 IONS `(2K^(+) and 1 SO_(4)^(2-))` 1 mole of `K_(2)SO_(4)` contains `3 xx 6.023xx 10^(23)`ions `10^(-4)` mole of`K_(2)SO_(4)`contains `3xx6.023xx10xx10^(-4)+ ions= 18.069xx10^(19)`

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