Question

Обчислити масові частки елементів у купрум (2)оксид​

Answer 1

Ответ:

Пошаговое объяснение:

CuO

w = Ar/Mr*100%

Mr(CuO) = 63,5+16=79,5

w(Cu) = 63,5/79,5*100% ≈ 80%

w(O)=16/79,5*100%≈20%

Answer 2

Calculating the Molar Mass of Copper(II) Oxide

To calculate the molar mass of copper(II) oxide (CuO), we need to consider the atomic masses of copper (Cu) and oxygen (O) and then sum them up.

The atomic mass of copper (Cu) is approximately 63.55 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol.

So, the molar mass of copper(II) oxide (CuO) can be calculated as follows: Molar mass of CuO = Atomic mass of Cu + Atomic mass of O Molar mass of CuO = 63.55 g/mol + 16.00 g/mol Molar mass of CuO ≈ 79.55 g/mol

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