Question

Встановіть кількість речовини кальцій гідроксиду (Ca(OH)2), масою 222 г.

Answer 1

Відповідь:

444грасм

Пояснення:

Answer 2

Calculating the Amount of Calcium Hydroxide (Ca(OH)2)

To calculate the amount of substance of calcium hydroxide (Ca(OH)2) with a mass of 222 g, we can use the molar mass of calcium hydroxide to convert the mass to moles.

The molar mass of calcium hydroxide (Ca(OH)2) can be calculated as follows: - Calcium (Ca) has a molar mass of approximately 40.08 g/mol. - Oxygen (O) has a molar mass of approximately 16.00 g/mol. - Hydrogen (H) has a molar mass of approximately 1.01 g/mol.

Therefore, the molar mass of calcium hydroxide (Ca(OH)2) is: 2(16.00 g/mol) + 2(1.01 g/mol) + 40.08 g/mol = 74.14 g/mol.

Now, we can use the molar mass to calculate the amount of substance (moles) of calcium hydroxide in 222 g.

Calculations: - Molar mass of Ca(OH)2 = 74.14 g/mol - Given mass of Ca(OH)2 = 222 g

Using the formula: Amount of substance (moles) = Given mass / Molar mass

Amount of substance (moles) = 222 g / 74.14 g/mol Amount of substance (moles) ≈ 2.99 moles

Therefore, the amount of substance of calcium hydroxide (Ca(OH)2) with a mass of 222 g is approximately 2.99 moles.