Calculate the mass percentageof aspirin and acetonitrile when 6.5g of

1.	Calculate the mass percentageof aspirin and acetonitrile when 6.5g of aspirin dissolved.in 450g of acetonitrile
Answer» Answer : Mass percentage of aspirin = 1.424%. Step-by-step EXPLANATION : GIVEN that, Mass of solute, aspirin = 6.5 g. Mass of solvent, ACETONITRILE = 450 g. $\hrulefill$ Mass of SOLUTION = Mass of solute + Mass of solvent ⇒ 6.5 g + 450 g ⇒ 456.5 g. Now, we know, $\rm{Mass\:\%\:of\:solute=\dfrac{Mass\:of\:solute}{Mass\:of\:solution}\times{}100}$ PUTTING the values, we get, Mass % of solute aspirin = $\implies\rm{\dfrac{6.5\:g}{456.5\:g}\times{}100}$ $\implies\rm{\dfrac{650}{456.5}}$ $\implies\bold{1.424\%.}$