# The amount of formaldehyde required to obtain 1 liter of formalin (p = 1.11 g / ml) with a mass fraction of formaldehyde of 10% is

May 28, 2020 | Education

| Formalin is a formaldehyde solution.

Determine the mass of the solution

m = V * p

m = 1000ml * 1.11g / ml = 1110g

Determine the mass of the substance in solution.

m substance = ω * m solution

m substance = 0.1 * 1110 = 111g

Determine the volume of the substance V = Vm * n, n = m / M

V = Vm * m / M

V = 82.88 L

Write down the number to the nearest tenth.

The answer is 82.9 liters

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.