Calculate and formulate in the form of a problem the mass of vinegar in a bottle from your kitchen.

Given:
V (CH3COOH) = 1 L = 1000 ml
ω (CH3COOH) = 9%
ρ solution (CH3COOH) = 1.0127 g / cm3 = 1.0127 g / ml

To find:
m (CH3COOH) -?

Decision:
1) Calculate the mass of the acetic acid solution:
m solution (CH3COOH) = ρ solution (CH3COOH) * V solution (CH3COOH) = 1.0127 * 1000 = 1012.7 g;
2) Calculate the mass of acetic acid:
m (CH3COOH) = ω (CH3COOH) * m solution (CH3COOH) / 100% = 9% * 1012.7 / 100% = 91.143 g.

Answer: The mass of CH3COOH is 91.143 g.