To determine the number of atoms in a given amount of a substance, you can use Avogadro's number, which states that there are 6.022 × 10^23 atoms in one mole of any substance.
Given that you have 0.15 mol of neon (Ne), you can calculate the number of atoms using the following formula:
Number of atoms = Number of moles × Avogadro's number
Let's plug in the values:
Number of atoms = 0.15 mol × (6.022 × 10^23 atoms/mol)
Calculating this expression gives us:
Number of atoms = 9.033 × 10^22 atoms
Therefore, there are approximately 9.033 × 10^22 atoms in 0.15 mol of neon (Ne).