How to prepare 250 grams of 8% salt solution?
| August 4, 2021 | education
m (salt) = 250 g.
W = 8%.
Let’s determine how to prepare this solution. We write down the solution.
Determine the mass of salt in a given solution. We use the following formula.
W = m r.v / m r-ra * 100%.
m r.v = m solution * W / 100%.
m salt = 250 * 8/100 = 20 g.
Next, we find the mass of water. We write down the solution.
m solution = m r.v + m H2O.
m H2O = m solution – m r.v = 250 – 20 = 230 g.
The mass of water in the solution is 230 grams.
Therefore, in order to obtain 250 grams of an 8 percent solution, it is necessary to mix 230 grams of water and 20 grams of salt.
Answer: the mass of water is 230 g, the mass of salt is 20 g.
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