The reaction of 15 moles carbon with 30 moles O2 will result in a theoretical yield of __ moles CO2.

15 moles.

Explanation:

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In this case, the undergoing chemical reaction is:

Clearly, since carbon and oxygen are in a 1:1 molar ratio, 15 moles of carbon will completely react with 15 moles of oxygen, therefore 15 moles of oxygen remain as leftovers. In such a way, since carbon and carbon dioxide are also in a 1:1 molar ratio, the theoretical yield of carbon dioxide is 15 moles based on the stoichiometry:

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explanation: