Question

Calculate the number of moles of Br in a sample containing 4.41 x 10^24 atoms of Br.

Answer 1

To find the number of moles of Br, divide the given number of atoms by Avogadro's number, resulting in approximately 7.32 moles of Br.

Step-by-step explanation:

To calculate the number of moles of bromine (Br) in a sample containing 4.41 x 10^24 atoms of Br, we use Avogadro's number, which is 6.022 x 10^23 atoms/mole. This number serves as a conversion factor between atoms and moles. The calculation is as follows:

1. Divide the number of Br atoms by Avogadro's number.
2. Calculate: (4.41 x 10^24 atoms) ÷ (6.022 x 10^23 atoms/mole).
3. The result is the number of moles of Br in the sample.

Using the steps above, we find that the number of moles of Br is approximately 7.32 moles.