Posted by Z on Tuesday, January 20, 2009 at 11:10pm.
101.325 kPa = 1 atmosphere = 760 mm Hg.
It's just a conversion.
so for the first anwser it would be 101.325kpa because that is the measurement of 1 atmosphere
No, of course not. You haven't converted anything. The problem states that the pressure is 104.2 kPa so to convert to atmospheres, we would have
104.2 kPa x (1 atm/101.325) = ?? atm. Notice how the units kPa in the numerator cancel with the kPa in the denominator. The unit atm doesn't cancel with anything which makes the unit of the answer atm which is what you wanted; i.e., pressure in atm. Now you do the one with mm Hg. 1 atm = 760 mm Hg.
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