Answer

The equation we will use is Mole=mass/Mr.
We know the moles which is equal to 2.
We now have to find out the Mr or molecular mass of carbon dioxide. For this we refer to it's formula and the periodic table. The formula for carbondioxide is CO2. From this we see that one molecule of carbon dioxide is a combination of 1 carbon and 2 oxygen atoms. We now ake a look at the periodic table to find out the mass number of carbon and oxygen. It is the number below the letter rounded of. Carbon=12 Oxygen=16.

Now we know that there is one carbon and two oxygen so we multiply oxygen by 2 and add up carbon to it to get=44

Now we put this into the equation=

2=mass/44

mass=88g