Question

How many molecules are in 1.2 moles of H20?​

Answer 1

Answer:

7.226 × 10^23 molecules.

Explanation:

• A compound is a substance that is made by two or more atoms from different elements.

• A mole of a compound contains a number of molecules equivalent to Avogadro's number,  6.022 × 10^23.
• That is, one mole of a compound contains 6.022 × 10^23 molecules.

In this case we are given;

Number of moles of H₂O as 1.2 moles

But, 1 mole of H₂O contains 6.022 × 10^23 molecules.

We are required to calculate the number of molecules present;

• To calculate the number of molecules we are going to multiply the number of molecules in one mole by the number of moles.

• Therefore;

Number of molecules = 1.2 moles × 6.022 × 10^23 molecules/mole

                                    = 7.226 × 10^23 molecules.

Thus, 1.2 moles of water contains 7.226 × 10^23 molecules.