200 g of solution contains 10 g of salt, what is the mass fraction of salt in the solution.
| December 21, 2020 | education
given m (r.v) = 200g
m (B-va) = 10 g
we solve the problem according to the formula W = m (r.v) / m (p-pa) * 100%
then we substitute all known values into the formula
W = 10/200 * 100 = 0.05 * 100 = 5%
answer 5%
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