Posted by Brenan on Sunday, March 30, 2008 at 8:55pm.
Convert 500 g urea to mols. mols = grams/molar mass.
Convert mols urea to mols NH3 using the coefficients in the balanced equation.
Use PV = nRT to convert mols NH3 at STP (mols you have from step 2) to mols NH3 at 25 C and 1.5 atm.
Post your work if you get stuck.
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