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ivanzaharov
1 month ago
13

A human lung at maximum capacity has a volume of 3.0 liters. If the partial pressure of oxygen in the air is 21.1 kilopascals an

d the air temperature is 295 K, how many moles of oxygen are in the lung?
Chemistry
1 answer:
lions [2.9K]1 month ago
3 0

Answer: 0.026 moles of oxygen are present in the lung

Explanation:

We can address this question using the ideal gas law.

The relevant equation is shown below.

PV = nRT

We know P = 21.1 kPa

Now, converting pressure from kPa to atmospheres is essential.

The conversion factor used is 1 atm = 101.3 kPa.

21.1 kPa \times \frac{1atm}{101.3kPa}= 0.208 atm

V = 3.0 L

T = 295 K

R = 0.0821 L-atm/mol K

We proceed to rearrange the equation to solve for n.

n = \frac{PV}{RT}

n = \frac{0.208atm\times 3.0L}{0.0821 L.atm/mol K\times 295 K}

n = 0.026 mol

0.026 moles of oxygen are present in the lung

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