Calculate the mass of water and solute required to obtain 150 g of a 20% solution.
| December 9, 2020 | education
Decision:
In the first step, we find
mass of substance in solution 20% per 150 g NaCl
m (NaCl) = m (NaCl) * w (NaCl)
m (NaCl) = 150×0.2 = 30 grams
Well, in the second step, we will find the mass of water, for this we subtract the mass of NaCl salt from the entire mass of the solution
m (H2O) = 150-30 = 120 grams
Answer: 120 g
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