anonymous
  • anonymous
PLEASE HELP MEDALS WILL BE AWARDED!!! To prevent a condition called the “bends”, deep sea divers breathe a mixture containing, in mole percent, 10.0% O2, 10.0% N2 , and 80.0% He. a. Calculate the molar mass of this mixture. b. What is the ratio of the density of this gas to that of pure Oxygen?
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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aaronq
  • aaronq
molar mass = \(0.1*M_{O_2}+ 0.1*M_{N_2}+0.8*M_{He}\)
anonymous
  • anonymous
so then the answer should be 9.2 g/mol
anonymous
  • anonymous
right? @aaronq

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aaronq
  • aaronq
if thats what you calculated, then yes.
aaronq
  • aaronq
for the second part, use PV=nRT, arranged for density
aaronq
  • aaronq
\(\rho=\dfrac{PM}{RT}\)
anonymous
  • anonymous
alright thank you :)
aaronq
  • aaronq
no problem

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