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Nitric oxides, NO and NO_2, contribute to air pollution, acid rain, and the depletion of the ozone layer. After NO forms in the combustion chamber of an automobile engine, it reacts further with oxygen to form NO_2. The reaction is given by 2NO (g)} + O2(g)rightarrow 2NO2(g) The following table gives some entropy values: Substance Delta S^ (J/mol\ K) NO_2 240.0 O_2 205.2 NO 210.8 Part A Calculate Delta S rxn^\circ for the reaction 2NO (g) + O_2(g)} \rightarrow 2NO_2(g)
How much heat is evolved in converting 1.00 mol of steam at 145°C to ice at -50.0°C? The heat capacity of steam is 2.01J/g?°C and of ice is 2.09J/g?°C.
Benzene has a boiling point of 80.1 degrees celcius and a molal boiling point elevation constant of 2.53 degrees celcius/m. Calculate the boiling point of a solution containing 15.0 g of the non-electrolyte C6H4Br2 in 125 ml of benzene (sp gravity..
Determine the empirical formula for each substance.
If 3.7 g of butanoic acid, C4H8O2, is dissolved in enough water to make 1.0 L of solution, what is the resulting pH
A mixture of 4.0 mol of H2 and 2.0 mol of O2 is placed in a sealed evacuated container made of a perfect insulating material at 27C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
the major differences in the dehydration of an alcohol by an E1 and E2 reaction mechanism.
If a person were to say that a scientific finding was replicated, he or she would be saying that the finding was
Calculate the pH of the solution at the half equivalence point. Explain how the pH at the half equivalence point is related to Ka for the weak acid.
Which of the metals in the cymbal alloys might be able to be quantitatively measured using UV-vis spectrophotometry. Select one or more
What is the pH of a solution which is 0.0400 M in formic acid, HCO2H, and 0.0600 M in sodium formate
The rate law for the reaction NO(g) + O3(g) ? NO2(g) + O2(g) is first-order in NO and O3, and second-order overall. Write the complete rate law for this reaction.
Calculate how many grams of ATP must be produced to walk a mile. ATP synthesis is coupled to the oxidation of glucose (?Go' = -686 kcal/mol). How many grams of glucose are actually metabolized to produce this amount of ATP?
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