The pressure of the carbon dioxide will be 0.09079 atm.
The pressure exerted by the individual gas is known as partial pressure.
The partial pressure is given as
[tex]\rm P_{Total} = P_1 + P_2 + ...[/tex]
In a mixture of carbon dioxide and oxygen, 40.0% of the gas pressure is exerted by oxygen.
If the total pressure is 115 mmHg.
The total pressure in atm will be
P = 115 mmHg
P = 0.15132 atm
We have
[tex]\rm P_T \ \ \ = P_{O_2} + P_{CO_2}\\\\0.15132 \ \ = 0.4 \times 0.15132 +P_{CO_2}\\\\ P_{CO_2} = 0.09079\ atm[/tex]
Then the pressure of the carbon dioxide will be 0.09079 atm.
More about the partial pressure link is given below.
https://brainly.com/question/13199169
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