contestada

A mole is a counting number that allows scientists to describe how individual molecules and atoms react. If one mole of atoms or molecules is equal to 6.022 × 1023 atoms or molecules, how many molecules are in a 23.45 g sample of copper (II) hydroxide, Cu(OH)2? Express your answer to the correct number of significant figures. (MM of Cu(OH)2 is 97.562 g/mol). Be sure to show all steps completed to arrive at the answer.

Respuesta :

Answer:

Cu(OH)2 mass = 23.45 g

Cu(OH)2 has a molar mass of 97.562 g/mol.

Since we already know,

Moles are defined as the mass of a molecule divided by the mass of a molecule.

Rightarrow Moles = 0.2404 moles = (23.45 g)/(97.562 g/mol)

Because one mole of a substance comprises 6.022 1023 molecules,

As a result, 0.2404 moles contain = 0.2404*(6.022 1023 molecules) = 1.448 1023 molecules.

Otras preguntas