What is the mass fraction of potassium nitrate in a solution containing 40 g of salt and 350 g of water
| September 29, 2021 | education
Given:
m (substance) = 40 g;
m (water) = 350 g.
W -?
Solution:
W = m (substance): m (solution) × 100%.
m (solution) = m (water) + m (substance).
m (solution) = 40 g + 350 g = 390 g.
W = (40g: 390) × 100% = 10.26%.
Answer: 10.26%.
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