Question

Обчисліть відносну молекулярну масу речовини, що складається: Са(ОН)²​

Answer 1

Ответ:

74

Объяснение:

Mr(Ca(OH)₂ = 40 + (16+1)·2 = 74

Answer 2

Ответ:

74 г/моль

Объяснение:

Mr(Ca(OH)₂) = 40 + (16+1)*2 = 40 + 34 = 74 г/моль

Answer 3

Calculating the Relative Molecular Mass of Ca(OH)₂

To calculate the relative molecular mass of a substance, we need to consider the atomic masses of each element in the compound and then sum them up.

The relative molecular mass of Ca(OH)₂ can be calculated as follows:

- Calcium (Ca) has an atomic mass of 40.08 g/mol. - Oxygen (O) has an atomic mass of 16.00 g/mol. - Hydrogen (H) has an atomic mass of 1.01 g/mol.

Using these atomic masses, we can calculate the relative molecular mass of Ca(OH)₂:

Relative Molecular Mass of Ca(OH)₂ = (Atomic mass of Ca) + 2*(Atomic mass of O) + 2*(Atomic mass of H)

Relative Molecular Mass of Ca(OH)₂ = 40.08 + 2*(16.00) + 2*(1.01)

Relative Molecular Mass of Ca(OH)₂ = 40.08 + 32.00 + 2.02

Relative Molecular Mass of Ca(OH)₂ = 74.10 g/mol

Therefore, the relative molecular mass of Ca(OH)₂ is 74.10 g/mol.