The molar mass of naturally occurring neon (Ne) is approximately 20.180 grams per mole (g/mol). To calculate the mass in grams of a given number of atoms, you can use the Avogadro's number, which states that there are 6.022 × 10^23 atoms in one mole of any substance.
Here's how you can calculate the mass in grams of 2.00 × 10^5 atoms of neon:
Determine the number of moles of neon atoms: Number of moles = Number of atoms / Avogadro's number Number of moles = 2.00 × 10^5 atoms / (6.022 × 10^23 atoms/mol)
Calculate the mass using the molar mass: Mass = Number of moles × Molar mass Mass = (2.00 × 10^5 atoms / (6.022 × 10^23 atoms/mol)) × 20.180 g/mol
Performing the calculation:
Mass = (2.00 × 10^5 / 6.022 × 10^23) × 20.180 ≈ 6.68 × 10^-15 grams
Therefore, the mass in grams of 2.00 × 10^5 atoms of naturally occurring neon is approximately 6.68 × 10^-15 grams.