How many g of salt should be dissolved in 95 g of water to get a 5% salt solution.

univerkov | January 17, 2021 | education

Given:
m (H2O) = 95 g
w (salt) = 5% = 0.05
To find:
m (salts)
Decision:
Let x be the mass of salt, then
m p (salts) = m (salts) + m (H2O) = x + 95
w (salt) = x / (x + 95) = 0.05
x = 0.05x + 0.05 * 95
0.95x = 4.75
x = 5 g
Answer: 5 g

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