As a result of hydration of 89.6 l of acetylene, an acetaldehyde solution with a mass fraction

As a result of hydration of 89.6 l of acetylene, an acetaldehyde solution with a mass fraction of 20% was obtained. The mass of the resulting solution is?

First, we write down the equation of reactions.
C2H2 + H2O -> C2H3OH.
Using the reaction equation, we find the volume of acetaldehyde.
89.6 L C2H2 – x L C2H3OH.
22.4 L – 22.4 L
X L = 89.6 L × 22.4 ÷ 22.4 = 89.6 L C2H3OH.
Next, we find the mass of acetaldehyde.
n = m / M.
M = V / Vm.
M = 12 × 2 + 4 + 16 = 44 g / mol.
m = V × M / Vm = 89.6 l × 44 g / mol ÷ 22.4 = 176 g С2Н3ОН.
Next, we find the mass of the solution.
W = mr.w / mr-ra × 100%.
m p-ra = m p.w × 100% ÷ W = 176 × 100 ÷ 20 = 880 g.
This means that the mass of the solution is 880 g.
Answer: m solution = 880 g.