To determine which compound contains the greatest number of moles of oxygen atoms, we need to compare the given compounds and calculate the number of moles of oxygen atoms in each compound.
Let's consider the following compounds:
A. H2O2 (Hydrogen peroxide)
B. CO2 (Carbon dioxide)
C. Ca(NO3)2 (Calcium nitrate)
D. Na2SO4 (Sodium sulfate)
To calculate the number of moles of oxygen atoms, we need to look at the chemical formula of each compound and count the number of oxygen atoms present.
A. H2O2: 2 moles of oxygen atoms
B. CO2: 2 moles of oxygen atoms
C. Ca(NO3)2: 6 moles of oxygen atoms (2 oxygen atoms per nitrate group, and there are three nitrate groups)
D. Na2SO4: 4 moles of oxygen atoms (4 oxygen atoms in total, 2 from sulfate group and 2 from sodium)
Based on the calculations, compound C (Ca(NO3)2) contains the greatest number of moles of oxygen atoms, with 6 moles of oxygen atoms in each mole of the compound.