How many grams of nitrogen will be produced in a reaction between ammonia and dinitrogen monoxide in which the total heat energy released was 505 KJ?

2 NH3 + 3 N2O = 4 N2 + 3 H2O DELTA Hrxn= ?
Given:
4 NH3 + 3 O2 = 2 N2 + 6 H2O DELTA Hrxn= -1556KJ
N2O + H2 = N2 + H2O DELTA Hrxn= -389.4 KJ
H2+ ½ O2 = H2O DELTA Hrxn= -223.9 KJ

This is a mixture that has the same composition throughout.

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.

Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.