a sample of gas isolated from unrefined petroleum contains 90.0% methane, 8.90% ethane, and 1.10% propane at a total pressure of 307.2 kpa. what is the partial pressure of ethane? (the percentages given indicate the percent of the total pressure that is due to each component.)

answer:

i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!

answer:

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explanation:

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for letting me