(a) An ideal gas occupies a volume of 2.6 cm3 at 20°C and atmospheric pressure.

Physics
Tutor: None Selected Time limit: 1 Day

Jun 21st, 2015

Thank you for the opportunity to help you with your question!

for (a) you use the ideal gas law PV=nRT=NRT/Na where N is the number of molecules

so N=PVNa/(RT)

1 atm = 101,325 Pa , V = 2.6 cm3 = 2.6*10^(-6) m3 , T=293 K

N=6.51*10^19

for (b) using the formula n=PV/(RT), you find n=3.20*10^(-20) moles

Hope it helps !!!


Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 21st, 2015

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