A mixture weighing 30.500 g contained 8.500 g NH4Cl, 21.250g SIO2, with the remainder being NaCl. Find the percent, by weight, of each component.

Question

this is for my chem lab

Answer 1

% by weight = mass of individual component/total mass (x100%)

% NH4Cl = 8.500 g/30.500 g (x100) = 27.87%

% SiO2 = 21.250 g/30.500 g (x100) = 69.67%

% NaCl = 100 % - 27.87% - 69.67% = 2.460%