How to Calculate the Number of Atoms in Oxygen Sample
To calculate the number of atoms in a sample of oxygen based on its mass, we need to follow a series of steps involving conversion of mass to moles and then applying Avogadro's Number.
Calculation of Number of Atoms in Oxygen Sample:
First, we need to convert the mass of the oxygen sample to moles using the molar mass of oxygen (O).
The molar mass of oxygen (O) is approximately 16 grams per mole.
Given mass of oxygen sample = 5.06 grams
Number of moles of oxygen = Mass of oxygen / Molar mass of oxygen
Number of moles of oxygen = 5.06 g / 16 g/mol = 0.32 moles
Next, we need to apply Avogadro's Number to convert moles of oxygen to number of oxygen atoms.
Avogadro's Number is approximately 6.022 x 10^23 atoms per mole.
Number of atoms of oxygen = Number of moles of oxygen x Avogadro's Number
Number of atoms of oxygen = 0.32 moles x 6.022 x 10^23 atoms/mol = 1.90 x 10^23 atoms
Therefore, the sample of oxygen with a mass of 5.06 grams contains approximately 1.90 x 10^23 atoms of oxygen.