How many moles of CO2 contains 16 g of oxygen?

Step 1: Determine the molar mass of CO2 (Carbon Dioxide) The molar mass of CO2 is the sum of the molar mass of Carbon (C) and Oxygen (O2). The molar mass of Carbon is approximately 12.01 g/mol and the molar mass of Oxygen is approximately 16.00 g/mol. Since there are two atoms of Oxygen in CO2, we multiply the molar mass of Oxygen by 2.

So, Molar mass of CO2 = 12.01 g/mol (C) + 2 * 16.00 g/mol (O) = 44.01 g/mol

Step 2: Determine the proportion of Oxygen in CO2 The proportion of Oxygen in CO2 is the molar mass of Oxygen divided by the molar mass of CO2.

So, Proportion of Oxygen in CO2 = (2 * 16.00 g/mol) / 44.01 g/mol = 0.7273

Step 3: Calculate the moles of CO2 The moles of CO2 is the mass of Oxygen divided by the proportion of Oxygen in CO2.

So, Moles of CO2 = 16 g / 0.7273 = 22.00 moles

Therefore, 16 g of Oxygen contains approximately 22 moles of CO2.