The mass fraction of hydrochloric acid, expressed as a percentage, in the solution obtained by dissolving 11.2 liters of hydrogen chloride in 1 liter of water is
ω = m (substance) / m (solution) (1)
Find the mass of the substance m = Mn n = V / Vm m = 36.5 * 11.2 / 22.4 = 18.25 g
Find the mass of the solution m = 1000 + 18, 25 = 1018.25 g
Substitute the values in the formula (1) ω = 0.0179 = 1.79%
Round to tenths ω = 1.8%
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.