Determine the mass fractions of substances in the solution if it is known that 1 g of barium hydroxide
| April 30, 2021 | education
Determine the mass fractions of substances in the solution if it is known that 1 g of barium hydroxide is dissolved in 500 g of water.
Given:
m (Ba (OH) 2) = 1g.
m (water) = 500 g.
w -?
Decision:
Mass fraction is determined by the formula:
w = m (substance): m (solution) × 100%,
m (solution) = m (water) + m (substance),
m (solution) = 500 g + 1 g = 501 g.
W = (1 g: 500 g) × 100% = 0.2%.
Answer: 0.2%.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
