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A gas is compressed and during this process the surroundings do 111 J of work on the gas. At the same time, the gas loses 246 J of energy to the surroundings as heat. What is the change in the internal energy of the gas?
Carbon tetrachloride, CCl4, is nonpolar. What forces hold the molecules together?
For a certain reaction, the standard free energy change is -80.0 kJ at 300 K and -40.0 kJ at 600 K. What is ΔS in J/K for this reaction, assuming ΔH and Δ S do not change with temperature
Size exclusion chromatography (SEC) is a different technique. Explain how this technique is different from HPLC, Liquid chromatography, TLC, and GC.
a TIre has a volume of 535 cm3 at a temprature of 20 c while in use the temprature of the tire rises to 65 c calculet the new volume of the tire assuming a constant pressure and amount of air?
20.00 mL of 0.160 M HC2H3O2 (Ka = 1.8x10-5) is titrated with 0.200 M NaOH. What is the pH of the solution before the titration begins
Assuming that gaseous water is ideal, calculate the molar volume and compression factor Z.
Explain what is the expected geometry of SO2. (S is the central atom). Depict the Lewis structure. SO2 can act as a Lewis acid as well as the fluoride anion can act as a Lewis base. Depict the Lewis structure that you expect when they combine. Expl..
graph this phase change,with energy as a function of temperature.Do not assume that the eteam is an ideal gas. ?H fus=334.0 j/g ?H vapeur =2260 j/g Ch2o solid=2.11 j/g.k Ch2o liquid=4.18 j/g.k Ch2o gas=2.08 j/g.k a=5.464l62 bar/mol b=0.03049L/mol
How many grams of KNO3 can dissolve in 185ml of water
Assuming that the rate of a chemical reaction doubles for every 10 celcius temperature increase, by which factor would a chemical reaction increase if the temperature were increased from
The decomposition of ozone in the upper atmosphere is facilitated by {\rm NO}. The overall reaction and the rate law are O3(g) + O(g) = 2 O2(g) Rate = k [ O3}][ NO]
CH3CH2CH2CN can be synthesized by an SN2 reaction. Draw the structures of the alkyl chloride and nucleophile that will give this compound in highest yield.
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