Question

Печему когда в мензурку налить 10 мл воды, а потом ещё 10 мл спирта, объем будет меньше 20 мл

Answer 1

Спирт испаряется
а вода нет
или наоборот

Answer 2

Возможно спирт может испариться .....

Answer 3

Explanation of the Phenomenon

When you pour 10 ml of water into a measuring cylinder and then add another 10 ml of alcohol, the total volume is less than 20 ml. This phenomenon occurs due to the interaction between the water and alcohol molecules, resulting in a decrease in the overall volume.

Scientific Explanation

The phenomenon can be explained by the molecular structure and behavior of water and alcohol. When the two substances are mixed, the molecules of water and alcohol form intermolecular bonds, leading to a decrease in the overall volume. This is due to the molecular arrangement and the attractive forces between the molecules of water and alcohol.

Mathematical Representation

The phenomenon can also be understood through the concept of molar volume. According to the ideal gas law, the molar volume (V) of a substance is inversely proportional to its molar mass (m). This means that when different substances are mixed, the molar volume of the resulting mixture may not simply be the sum of the individual molar volumes.

The mathematical representation of this phenomenon can be expressed as:

V = m / ρ

Where: - V represents the volume - m represents the mass - ρ represents the density

This equation illustrates the relationship between volume, mass, and density, and how it can lead to a decrease in volume when different substances are mixed.

Conclusion

In summary, when 10 ml of water is poured into a measuring cylinder followed by the addition of 10 ml of alcohol, the total volume is less than 20 ml due to the molecular interactions and the mathematical relationship between volume, mass, and density of the substances involved.