Calculate the mass: a) 0.3 mol H2O b) 0.5 mol KCl c) 4 mol CuO d) 0.2 mol Fe2O3

m- (mass of substance) = M (molecular mass) * V (amount of substances)
a) m = 0/3 * 18 = 5.4g
b) m = 0.5 * 74.5 = 37.25g
c) m = 4 * 80 = 320g
d) m = 0.2 * 160 = 32g



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