Question

2) Вычислите количество вещества сахарозы, если его масса равна 427,5 г.

Answer 1

Сахароза - C12H22O11
Смотри фото

Answer 2

Calculating the Amount of Substance (Moles) of Sucrose

To calculate the amount of substance (moles) of sucrose when its mass is 427.5 g, we can use the formula:

Amount of substance (moles) = Mass / Molar mass

Where: - Mass is the given mass of sucrose (427.5 g) - Molar mass is the molar mass of sucrose

The molar mass of sucrose (C12H22O11) can be calculated by adding the atomic masses of its constituent elements.

The atomic masses are approximately: - Carbon (C): 12.01 g/mol - Hydrogen (H): 1.008 g/mol - Oxygen (O): 16.00 g/mol

Using these atomic masses, we can calculate the molar mass of sucrose and then use it to find the amount of substance (moles) of sucrose.

Calculating the Molar Mass of Sucrose: ``` Molar mass of sucrose = (12 * 12.01) + (22 * 1.008) + (11 * 16.00) g/mol ≈ 342.3 g/mol ```

Calculating the Amount of Substance (Moles) of Sucrose: ``` Amount of substance (moles) = 427.5 g / 342.3 g/mol ≈ 1.25 moles ```

Therefore, the amount of substance (moles) of sucrose, when its mass is 427.5 g, is approximately 1.25 moles.