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 cop

Question

2 years ago

13

per (ii) hydroxide, cu(oh)2? (mm of cu(oh)2 is 97.562 g/mol)

1 answer:

antiseptic1488 [7] · Answer 1 · 2023-09-30T19:33:17+03:00

The number of molecules that are needed in a 23.45 g sample of copper (ii) hydroxide, are 1.45 x 10²³.

<h3>What is Avogadro's number?</h3>

Avogadro's number is the measurement of the one mole of any substance that is equal to the Avogadro's number.

Avogadro's number is 6.022 × 10²³.

To calculate the moles

Moles = mass / molar mass

Mass is 23.45 g

Molar mass is 97.562

Putting the value in equation

Moles = 23.45 g/ 97.562 = 0.24 mol.

The moles of copper (II) hydroxide has been 0.24 mol.

The number of molecules in 0.24 mol sample has been driven by:

1 mol = 6.022 × 10²³.

0.24 mol = 0.24 x 10²³.

0.24 mol = 1.45 x 10²³.

Thus, the number of molecules that are needed in a 23.45 g sample of copper (ii) hydroxide, are 1.45 x 10²³.

Learn more about Avogadro's number

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