Question

Al2o3 - 3 моль, найти массу al2o3

Answer 1

Дано

n(Al2O3) = 3 моль

Решение

m(Al2O3) = n(Al2O3)M(Al2O3) = 3 * (2 * 27 + 3 * 16) = 3 * 102 = 306 г

Ответ: 306 г

Answer 2

Емли что-то не понятно, спроси( М- молярнач масса из таблицы Менделеева

Answer 3

To find the mass of Al2O3 (aluminum oxide) when you have 3 moles of the compound, you'll need to know its molar mass.

The molar mass of Al2O3 can be calculated by adding up the atomic masses of its constituent elements, aluminum (Al) and oxygen (O).

Atomic masses: Aluminum (Al) = 26.98 g/mol Oxygen (O) = 16.00 g/mol

Molar mass of Al2O3: 2 * (Aluminum's molar mass) + 3 * (Oxygen's molar mass) = 2 * 26.98 g/mol + 3 * 16.00 g/mol = 53.96 g/mol + 48.00 g/mol = 101.96 g/mol

Now, to find the mass of 3 moles of Al2O3, you can use the following formula:

Mass = Number of moles * Molar mass

Mass of 3 moles of Al2O3 = 3 moles * 101.96 g/mol Mass of 3 moles of Al2O3 = 305.88 grams

So, the mass of 3 moles of Al2O3 is 305.88 grams.