Answer: The amount of carbon dioxide for a given amount are 0.28 moles.
Step-by-step explanation:
To calculate the number of moles, we use the equation:

We are given:
Given mass of carbon dioxide = 12.3 g
Molar mass of carbon dioxide = 44 g/mol
Putting values in above equation, we get:

Hence, the amount of carbon dioxide for a given amount are 0.28 moles.