a resting adult requires about 240 ml of pure oxygen per minute and breathes about 12 times every minute. if inhaled air contains 20 percent oxygen by volume and exhaled air 16 percent, what is volume of air per breath? assume that volume of inhaled air is equal to that of exhaled air)
2007-01-08 17:17:22 · 3 answers · asked by Luciya 2 in Science & Mathematics ➔ Chemistry
As in your previous question, use dimensional analysis.
These are your conversion factors: 240mL=1 minute, 12 breaths=1 minute
Make 20% oxygen into a fraction (20mL oxygen/100 mL air) and realize that the adult is only retaining 4mL oxygen per 100mL air (20-16).
That should get you started!
2007-01-08 18:09:59 · answer #1 · answered by teachbio 5 · 0⤊ 0⤋
10g methane = 10/sixteen mol = 0.625mol, 10g of SO2 =10/sixty 4 mol = 0.15625mol. that's one quarter of the moles of methane. Now on the comparable stress and temperature 0.625 mol CH4 occupy 20dm^3 yet 0.15625 mol of SO2 will in basic terms occupy 20/4 = 5 dm^3
2016-12-12 07:30:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
115.2 mL of oxygen.Verify from
2007-01-08 18:53:03 · answer #3 · answered by Anonymous · 0⤊ 0⤋