Question

A party balloon is filled with 8.00 x 10^22 atoms of helium. How many moles of helium is this amount equivalent to?

a) 1.33 moles
b) 2.00 moles
c) 3.00 moles
d) 4.00 moles

Answer 1

To determine the number of moles of helium in the balloon, divide the number of atoms by Avogadro's number. In this case, there are 8.00 x 10^22 atoms of helium, which is equivalent to 1.33 moles.

Step-by-step explanation:

To determine the number of moles of helium, we need to use Avogadro's number, which relates the number of atoms or molecules to the amount in moles. Avogadro's number is 6.02 x 10^23 atoms/mole.

So, in this case, to convert from atoms to moles, we divide the number of atoms by Avogadro's number:

Number of moles = Number of atoms / Avogadro's number

Given that there are 8.00 x 10^22 atoms of helium, the number of moles of helium is:

Number of moles = (8.00 x 10^22 atoms) / (6.02 x 10^23 atoms/mole) = 1.33 moles

Therefore, the answer is option a) 1.33 moles.