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# Ideal Gas Equation Help please. Watch

1. I feel so right now, I keep getting the answer wrong but I don't know why??

b) The reading on the gas syringe was 75cm3, the temperature was 27oC and the atmospheric pressure was 100kPa. Calculate the number of moles of gas released into the syringe.

I did.

75 / 1x10^6 = 7.5x10^-5m3
27 + 273 = 300K
100 x 1000= 100,000Pa

n= pV
.. ----
. RT

So: 100,000 x 7.5x10^-5
.. --------------------------
.. 8.31 x 300

which I get the answer to be 270.76 to 2.dp

but in my book it says the answer is 3.01 x 10-3 mol

what have I done wrong???
2. If you do that same exact calculation again on your calculator you should be getting the right answer!

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Updated: December 24, 2010
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