Asked by Anonymous

A 1-\rm L flask is filled with 1.35 g of argon at 25 {\rm ^\circ C}. A sample of ethane vapor is added to the same flask until the total pressure is 1.15 atm.What is the partial pressure of argon, P_Ar, in the flask?What is the partial pressure of ethane, P_ethane, in the flask?

Answers

Answered by DrBob222
Assuming 1-\rm L flask means 1L flask and 25{\rm^\circ C} means 25 degrees C, then
Use PV = nRT to find the partial pressure of Argon. You know n = grams/atomic mass, R, T, and V. Solve for P.
Then use Ptotal = Pethane + PAr to solve for Pethane.
I have asked repeatedly what \rm means and what {rm^\circ} means with no response at all. If we don't know the symbols you use, perhaps we are giving the wrong answers.
Answered by anonymous
To Dr. Bob, those are font codes for a chemistry homework website, MasteringChemistry . com The students are copy and pasting the questions directly and not proofreading.

ex 1-/rm L means 1L, when on the site, the L is in a different font. And 25{\rm^\circ C} means 25 (the degree bubble) C
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