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A common anesthetic in dentistry known as nitronox consists of a mixture of dinitrogen oxide, n2o, and oxygen gas, o2, which is administered through an inhaler over the nose. If the anesthetic mixture has a total pressure of 740 mmhg, and the partial pressure of the oxygen is 370 mmhg, what is the partial pressure, in torr, of the dinitrogen oxide?

Answer :

Anesthetic in dentistry  consists of a mixture of dinitrogen oxide (N₂O) and oxygen gas (O₂), which is administered through an inhaler over the nose. Total pressure of the mixture ([tex]P_{total}[/tex]) is sum of partial pressure of N₂O ([tex]p_{N_{2}O }[/tex]) and partial pressure of O₂, ([tex]p_{O_{2} }[/tex]).

[tex]P_{total}=p_{N_{2}O } + p_{O_{2} }[/tex]

[tex]P_{total}= 740 mmHg, p_{O_{2} }[/tex]=370 mmHg

So, [tex]p_{N_{2}O }[/tex]= (740-370) mmHg= 370 mmHg=370 torr

Hence, partial pressure of N₂O is 370 torr.

As, 1mmHg= 1 torr.


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