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April 25, 2014

Homework Help: chemistry

Posted by Ben on Monday, March 15, 2010 at 3:28am.

Nitroglycerine decomposes according the the equation: 4C3H5(NO3)3 -> 12 CO2 + 10 H2O +6N2 + O2. 15.0 g of nitroglycerine is placed in a 500 ml flask at 25.0 C. The vapor pressure of water at this temperature is 23.8 mmhg. Find the total pressure in the flask after the reaction is complete, and determine the mole fraction of carbon dioxide. So I must find how many moles of each gas and h2o are formed? Do I add only the gases and use them in pv=nrt? And then substract the vapor pressure of water from the final P?

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