Determine the mass fractions of substances in the solution if it is known that 19 g of barium
| September 12, 2021 | education
Determine the mass fractions of substances in the solution if it is known that 19 g of barium hydroxide was dissolved in 500 g of water.
Given:
m (substance) = 19g,
m (water) = 500 g.
Find w -?
Solution:
The mass fraction of a substance is determined by the formula.
w – mass fraction.
W = m (substance): m (solution) × 100%,
m (solution) = m (substance) + m (water).
m (solution) = 500 g + 19 g = 519 g.
W = (19g: 519g) x 100% = 3.66%.
Answer: w = 3.66%.
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