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At 386 K, ?Go equals 124.0 kJ for the reaction, 2 H2S(g) <=> 2 H2(g) + S2(g) Calculate the value of K for the reaction at this temperature. Give your answer in scientific notation to 3 significant figures
A solution is prepared by dissolving 270 g of sucrose (C12H22O11) in 624 g of water. What is the vapor pressure of this solution at 30°C? (The vapor pressure of water is 31.8 mmHg at 30°C.)
what is the concentration of oygen dissolved in water at 20 degrees celsuis in equilibrium with a gas mixture at 0.81 atm.
Octane has a density of .692 g/ml at 20 degrees Celsius. how many grams of O2 are required to burn 1.00 gal of C8H18.
suppose a saturated solution of Barium Flouride contains 1.47*10^-2 M F-. What is the Ksp of the BaF2?
Heating any of the three isomeric dimethylbenzenes with HF in the presence of BF3 to 80 C leads to the equilibrium mixture shown below: 1,2-Dimethylbenzene: 18% , 1,3-Dimethylbenzene: 58% , 1,4-Dimethylbenzene: 24%
Dr. Carvell made up a 5X stock of ONPG stock solution that has a concentration of 50 mN. The molecular mass of ONPG is 354.7. What is the percent composition of this solution
Calculate the concentration of acid(or base) remaining in solution when 5.39mL of 6.93M HNO3 is added to 9.37mL of 8.37M NaOH. Note the final volume is the sum of two added volumes. which of the following statement is true for the solution after m..
These 3 solutions including 2.362 g of Rb2S, 1.635 g of NaClO 4 , and 0.796 g of CuCl 2 , respectively are combined together? now calculate what would be the mass of this precipitae?
The initial weight of the substance was = 1.391g After the heating process weight was = .404g % mass of water is = 29.0% Class average (true value) = 29.3% Question is, what is a plausible reason for a % mass of water that is higher/lower than the..
What are the bond angles in a model of CCl4 a) less than 109.5 degrees b) 109.5 degrees c) less than 120 degrees but greater than 109.5 degrees d) 120 degrees
Calculate the difference in pressure of 10.00g of carbon dioxide confined to a container of volume 100cm3 at 25.0 C between treating it as a perfect gas and a van der Waals gas.
Part A: Thymolphthalein is an indicator that changes color over a range from pH = 9.3 to pH = 10.5 . What is Ka of thymolphthalein. Part B: Alizarin yellow R, Ka=7.9x10^-12, is yellow in its protonated form (HX) and red in its ionized form (X-)
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