In 220 g of water, 30 g of salt was dissolved. Find the mass fraction of the resulting solution.

1. Let’s find the mass of the solution by the formula:

m (solution) = m (water) + m (salt) = 220 + 30 = 250 g

2. Let’s calculate the mass fraction of the resulting solution by the formula:

w (solution) = m (salt) * 100% / m (solution) = 30 * 100/250 = 12%.

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