Question

A boy with pneumonia has lungs with a volume of 1.8 L that fill with 0.075 mol of air when he inhales. When he exhales, his lung volume decreases to 1.4 L. Enter the number of moles of gas that remain in his lungs after he exhales. Assume constant temperature and pressure. n = mol

Answer 1

Hey there!

At constant temperature and pressure :

Volume and moles :

Vi / ni = Vf / nf =

1,8 / 0,075 = 1,4 / nf =

24 = 1,4 / nf

nf = 1,4 / 24

nf = 0.05833 moles of gas