Question

How many atoms are in 0.750 moles in zinc?

Answer 1

Answer:

4.52 × 10^23 atoms

Explanation:

Concept being tested: Moles and Avogadro's number

From the question we are given;

• Number of moles of Zinc = 0.750 moles

We are required to calculate the number of atoms of Zinc

• In order to answer the question, we need to know that a mole of an element contains atoms equivalent to the Avogadro's number.

• The Avogadro's number is 6.022 × 10^23.

Therefore;

1 mole of Zinc = 6.022 × 10^23 atoms

To calculate the number of atoms we need to multiply the number of moles with the Avogadro's constant.

 = 0.750 moles × 6.022 × 10^23 atoms

= 4.52 × 10^23 atoms

Therefore; 0.750 moles of Zinc contains 4.52 × 10^23 atoms