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.

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

(mass of hydrochloric acid in 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.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.