how many mol of carbon dioxide is this? m(C)=12, m(O)=16

Sorry I don't understand the question, you've just listed the relative atomic masses of C and O...

We need to know the mass of each. You have provided the molar mass M which can be found on the periodic table. However how much of each element was used? Need to provide more information

26

OK firstly what does 26 mean and who are you?