Question

Дано: m (Cu) = 3,2 Найти: m (CuO) -? Cu+O2=CuO

Answer 1

Дано :
m (Cu) = 3,2 г

Найти:
m (CuO)

Решение :

Находим молекулярные массы веществ:

Mr (Cu) = 64 г/моль

Мr (CuO) = Ar (Cu) + Ar (O) = 64 + 16 = 80 г/моль

Составим уравнение реакции:
--3,2 г--------------х г
2 Cu + O2 = 2 CuO
-64 г/моль------80 г/моль

m (CuO) = (3,2 г * 2 * 80 г/моль) : (2 * 64 г/моль) = 4 г

Ответ: 4 г СuO

Answer 2

To find the molar mass of copper oxide (CuO), we need to add the molar masses of its constituent elements, copper (Cu) and oxygen (O).

Given: m(Cu) = 3.2 g/mol (molar mass of copper)

Molar masses:

• M(Cu) = 63.55 g/mol (molar mass of copper)
• M(O) = 16.00 g/mol (molar mass of oxygen)

The chemical equation you provided is: Cu + O2 = CuO

This equation tells us that 1 mole of copper (Cu) reacts with 1 mole of oxygen (O2) to form 1 mole of copper oxide (CuO).

To calculate the molar mass of copper oxide (CuO), we'll sum the molar masses of copper and oxygen:

M(CuO) = M(Cu) + M(O) M(CuO) = 63.55 g/mol + 16.00 g/mol M(CuO) = 79.55 g/mol

So, the molar mass of copper oxide (CuO) is approximately 79.55 g/mol.