Calculate the mass, in grams, of K2SO4, needed to prepare 32.00 g of 2.000% (m/m) K2SO4 solution?
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Mass of solution = 32.00 g
Concentration (m/m) of solution = 2.000 %
mass of anhydrous K2SO4 used = ?
Concentration = (mass of K2SO4)/(mass of solution) * 100
=>2 = mass of K2SO4 / 32 * 100
=> 2 =mass of K2SO4 / 8 * 25
=> mass of K2SO4 = 16/25
mass of K2SO4 used = 0.64 grams of anhydrous K2SO4 is used.
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