What is the mass of hydrochloric acid in a solution weighing 200 g with a mass fraction of 35%?

To solve the problem, it is necessary to create a condition.

Given:
w (HCl) – 35% (mass fraction of hydrochloric acid)
m solution of hydrochloric acid (HCl) – 200 grams,
Find:
m (HCL) -?

(mass of hydrochloric acid in solution).

Solution:
m substance = m p-pа * w / 100%
m in-va (HCL) = 200 gr * 35% / 100% = 70 grams,
Answer: the mass of the substance of hydrochloric acid in solution is 70 grams.



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