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chemistry. 3 questions. help!

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CapO United States1615 Posts February 15 2009 07:23 GMT #1 it's been well over a year since the last time i had asked for help with my hw. please help me this time as well! thanks in advance to all the intelligent people on tl.net. The specific rate constant for the first-order decomposition of N2O5 to NO2 and O2 is 7.48 * 10^-3 s^-1 at a given temperature. Find the length of time required for the total pressure in a system containing N2O5 at an initial pressure of 0.110 atm to rise to 0.150 atm t = s Find the length of time required for the total pressure in a system containing N2O5 at an initial pressure of 0.110 atm to rise to 0.220 atm t= s Find the total pressure after 120s of reaction. p= atm

Clasic Bosnia-Herzegovina1437 Posts February 15 2009 07:51 GMT #2 Dude, yahoo answers, thats all I have to say. But seriously, I don't do this stuff yet and I'm about to be in high school. Must suck lmao.

CapO United States1615 Posts February 15 2009 07:52 GMT #3 lol nvm. this thing is over at 3:00am est. close please. i already got 2 correct. need the last one.

skyglow1 New Zealand3962 Posts February 15 2009 08:02 GMT #4 Omg I'm retarded. [Edit] Got 0.208 atm? I fail hard at chem now T_T

kaleidoscope Singapore2887 Posts February 15 2009 10:14 GMT #5 Wow, are you a college student? I dont think this is within my syllabus.. haha

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