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Methanol burns in oxygen to form carbon dioxide and water. Calculate Delta H rxn at 25 . = kj ?? 2) calculate Delta S rxn at 25 degree c = j/k?? 3) delta G at 25 degree C = ? kj?? 4) spontaneous
Discuss how one could tell the difference between first order, second order and zero order reactions by graphing the reactant concentration in some way vs time.
Ethane is burned with 20% excess air in a furnace operating at a pressure of 100 kPa. Assume complete combustion occurs. Determine the dew point temperature of the flue gas.
Air at 25°C and 100 kPa has a dew point of 16°C. If you want to remove 50% of the initial moisture in the air (at a constant pressure of 100 kPa), to what temperature should you cool the air
A room contains 12,000 ft.³ of air at 75°F and 29.7 inches Hg Absolute. The air has a dew point of 60°F. How many pounds of water vapor are in the air
What is the dew point of a mixture of air and water vapor at 60°C and 1 atm in which the mole fraction of the water is 12%. The total pressure on the mixture is constant.
Radiation therapy. An effective treatment for some can cancerous tumors involve irradiation with fast neutrons. The neutrons from one treatment source have an average velocity of 3.2 X10-7 m/s.
The hydrogen gas generated is collected over water at 20.0 C. The volume of the gas is 246 mL at 760 mm Hg. What mass of zinc was used
While making a methyl butanoate ester, and after we were done heating it up, we filtered it with water and NaHCO3. What gas escaped during the sodium bicarbonate washing?
In the manufactoring of computer chips, cylinders of silicon are cut into thin wafers that are 3.00 inches in diameter and have a mass of 1.50g of silicon. How thick, in milimeters( mm) is each w
3 Physical Chemistry Questions 3 Physical Chemistry Questions
Calculate the concentration of dissolved oxygen at 20 degree Celsius if the amount of dissolved O2 is 9.07 mg/L
Why is the temperature 60 instead of 328K?
In water, every sulfuric acid molecule transfers H+ to water and becomes an HSO4 - ion. Some HSO4 - ions give off another H+ to form SO4 -2 ions. Which statement is true?
At a certain temperature, the equilibrium constant for the following chemical equation is 3.30. At this temperature, calculate the number of moles of NO2(g) that must be added to 2.86 mol of SO2
1. Describe the method you would use to seperate a mixture of water(boiling point=100) can be seperated from ethanol(boiling point= 60c)
For my class data from reading a value off the buret with water inside my class results are 11.21, 11.23, 11.23, 11.23, 11.23, 11.24, 11.24, 11.25, 11.25, 11.25, 11.25, 11.25, 11.26, 11.28, 11.28
Thiosulfate was used to mask the copper in a 20.00 mL aliquot. Titration of the lead and zinc in this aliquot required 34.06 mL of the EDTA solution. Finally, cyanide was used to mask the copper and
Regarding the reaction of the products that correspond to syn addition of Br2 to trans cinnamic acid and those that correspond to anti addition, why would you isolate a pair of enantiomers rather th
Solve an equilibrium problem (using an ICE table) to calculate the pH of each of the following solutions. 1) .12 M HF pH = ? 2) a mixture that is 0.12 M HF in and 0.12M in NaF. pH =?
What would you predict the flux of glucose through glycolysis and gluconeogenesis is in the mutant bacterium compared to the wild type, is it likely to be increased or decreased
Calculate the minimum number of grams of propane, C3H8(g), that must be combusted to provide the energy necessary to convert 3.28 kg of ice at -11.0°C to liquid water at 80.0°C.
The heat of vaporization for the compound is 27.49 kJ/mol. Calculate the heat required to convert 27.0 g of C2Cl3F3 from a liquid at 12.00°C to a gas at 68.00°C.
Determine each of the following. 1) the initial pH? 2)the volume of added acid required to reach the equivalence point
If an electrode has a potential of -1.004 V with respect to a saturated calomel electrode, what is the potential with respect to a silver-silver chloride electrode (with saturated KCl)