To calculate the number of oxygen atoms in 88.0 grams of CO2, you need to use the concept of moles and the Avogadro's number.
The first step is to determine the molar mass of CO2, which is the sum of the atomic masses of carbon (C) and two oxygen (O) atoms. The atomic mass of carbon is approximately 12.01 atomic mass units (amu), and the atomic mass of oxygen is approximately 16.00 amu.
Molar mass of CO2 = (12.01 amu) + 2 * (16.00 amu) = 44.01 amu
Next, you can calculate the number of moles of CO2 by dividing the given mass (88.0 grams) by the molar mass of CO2.
Number of moles of CO2 = (mass of CO2) / (molar mass of CO2) = 88.0 g / 44.01 g/mol ≈ 2.000 moles
Since there are two oxygen atoms in one molecule of CO2, the number of oxygen atoms can be calculated by multiplying the number of moles of CO2 by the Avogadro's number, which is approximately 6.022 x 10^23 atoms/mol.
Number of oxygen atoms = (number of moles of CO2) * (Avogadro's number) ≈ 2.000 moles * (6.022 x 10^23 atoms/mol) ≈ 1.204 x 10^24 atoms
Therefore, there are approximately 1.204 x 10^24 oxygen atoms in 88.0 grams of CO2.