How many oxygen molecules are contained in 0.50 mol of calcium hydrogencarbonate?
I believe you mean atoms not molecules. An oxygen molecule has 2 oxygen atoms. When it bonds with other elements and compounds, it doesn’t bond as the oxygen molecule but rather the atom Back to the question, one molecule of bicarb has 6 oxygen atoms present. To find the number of molecules in 0.5 mole, we multiply this by avagadros number which is 6.023×10^23 since one mole has that amount of whatever substance it is. This gives us 3.012×10^23 so we mutiply this by 6 and this gives us 1.807×10^24 oxygen ATOMS present in 0.50 moles of bicarbonate.
