A solution weighing 250 g contains potassium nitrate weighing 40 g. Determine the mass fraction of salt?

univerkov | December 14, 2020 | education

KNO3 – potassium nitrate,
m (KNO3) = 40g,
m (solution) = 250g,
ω (KNO3) = m (KNO3) / m (solution) * 100%,
ω (KNO3) = 40g / 250g * 100% = 16%,
ω (KNO3) = 16%.

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