Determine the mass of the solution, which contains 12 g of copper (II) sulfate, the mass fraction of which is 8%.

Given:
m (CuSO4) = 12 grams
W solution (CuSO4) = 8%
Find: m solution (CuSO4)

Decision:
According to the formula W substance = m substance / m solution * 100%, it turns out m solution = m substance / W substance * 100%. Substitute the substance from the given into the formula, we get m solution (CuSO4) = m (CuSO4) / W solution (CuSO4) * 100% = 12 grams / 8% * 100% = 150 grams

Answer: m solution (CuSO4) = 150 grams.



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