Your lungs hold 4.2 L of air at a temperature of 27°C and a pressure of 101.3 kPa. How many moles of air do your lungs hold?
A) 0.15 moles
B) 0.17 moles
C) 0.19 moles
D) 0.21 moles
E) 0.23 moles

Question

Quizplus · Accepted Answer

To find the number of moles of air, we can use the ideal gas law: PV = nRT. Rearranging the equation to solve for n, we get n = PV/RT. Plugging in the given values, we get n = (101.3 kPa)(4.2 L)/(8.31 J/K/mol * 300 K) = 0.17 moles. Therefore, the answer is B.

Your Lungs Hold 4