A substance contains just copper and oxygen analysis shows that a 12.5g sample contains 11.1 of cooper and 1.4 of oxygen what is the formula of this red powder

Respuesta :

Answer:

The formula of the compound is Cu₂O.

Explanation:

From the question given above, the following data were obtained:

Mass of compound = 12.5 g

Mass of copper (Cu) = 11.1 g

Mass of oxygen (O) = 1.4 g

Formula of compound =?

The formula of the compound can be obtained as follow:

Cu = 11.1 g

O = 1.4 g

Divide by their molar mass

Cu = 11.1 / 63.5 = 0.175

O = 1.4 / 16 = 0.0875

Divide by the smallest

Cu = 0.175 / 0.0875 = 2

O = 0.0875 / 0.0875 = 1

Therefore, the formula of the compound is Cu₂O.