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Posted by **Steffani** on Tuesday, December 6, 2011 at 1:44pm.

Calculate the number of molecules in a deep breath of air whose volume is 2.30 Liters at body temperature, 36 degrees Celcius, and a pressure of 740 torr .

- Chemistry -
**DrBob222**, Tuesday, December 6, 2011 at 5:28pmNote the correct spelling of celsius.

Use PV = nRT and solve for n = number of moles. Then n = grams/molar mass and solve for grams.

Do the same for the second part, solve for n = number of moles. Then convert moles to # molecules remembering that there are 6.02E23 molecules in 1 mole.

- Chemistry -
**Lindsay**, Saturday, May 11, 2013 at 3:30pm0.089g

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