Answer : The number of moles of carbon dioxide is, 0.156 mole
Explanation : Given,
Mass of citric acid = 10 g
Molar mass of citric acid = 192 g/mole
The balanced chemical reaction will be,

From the balanced chemical reaction, we conclude that 1 mole of
react with 3 moles of
to give 1 mole of
, 3 moles of carbon dioxide gas and 3 moles of water as a product.
First we have to calculate the moles of citric acid.

Now we have to calculate the moles of carbon dioxide.
As, 1 mole of citric acid react to gives 3 moles of carbon dioxide
So, 0.052 mole of citric react to gives
moles of carbon dioxide
Therefore, the number of moles of carbon dioxide is, 0.156 mole