Calculate from sodium oxide, which is contained in 250 grams in a mixture with barium oxide, the mass fraction of sodium oxide is 15%.

univerkov | December 19, 2020 | education

Given:
m (mixture) = 250g
w (barium oxide) = 15%
To find:
m (barium oxide) -?
m (sodium oxide) -?
Decision:
w (mixture) = 100%
Find w (Bao) = 100% -15% = 75%
m (BaO) = W (BaO) * m (mixtures) = 75% * 250g = 187.5g
m (Na2O) = 250g-187.5g = 12.5g
Answer: 187.5g; 12.5g

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