What is the normality of a 48% by weight solution of HClO4?
density of HClO4 = 1.67 g / mL
weight percent = wt% = 48 %
molar mass of HClO4 = 100.45 g / mole
normality = wt % x 10 x density / molar mass
= 48 x 10 x 1.67 / 100.45
= 7.98 N
normality = 7.98 N
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