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A solution of A and B with 30 mole percent of A is in equilibrium with its vapour which contains60 mole percent of A. Assuming ideality of the solution and the vapour, calculate the ratio of the vapour pressure of pure A to that of pure B.
The rate constant of a reaction is 2.6*10-3s^-1 at 25 c, and the activation energy is 33.6kJ/mol. What is k at
determine the amount of heat in kj given off when 1.89 104 g of ammonia are produced according to the following
"Based upon what you know about the accepted mechanism for hydration, can you see any reason why this hydration should be 100% stereoselective?"
An air bubble has a volume of 0.500 L at 18 degrees C. If the pressure does not change, what is the volume, in liters, at each of the following temperatures? a) 0 degrees C; b) 425 K; c) -12 degrees C; d) 575 K.
Calculating the concentration of the acetate ion when dissociation of acetic acid occurs in water and over varying pH conditions? I am a process engineer in wood pulping operation in which we use steam to digest hardwood chips. This is non-chemica..
If the total mass of CO2 produced is 33.5 grams, what was the approximate mass of the methane in the original mixture?
Why is the intercept of a calibration curve of absorbance vs concentration not zero?
The absorbance at 595 nm was 0.78 and, according to a standard curve, corresponds to 0.015 mg of protein on the x-axis. What is the protein concentration of the original solution?
What mass of potassium benzoate is needed to prepare one liter of a 0.135M solution of potassium benzoate?
What error will this cause in their determination of the amount of iron in the table?
The first-order disappearance of a substance has a half-life of 34.0 s. How long does it take for the concentration of the substance to fall to 12.5% of the original value
For the reaction: PbCl2(s) ? Pb2+(aq)+2Cl1-(aq), what is Q* when 3.9 mL of 0.080 M lead nitrate is added to 13 mL of 0.020 M sodium chloride? Ksp of lead chloride is 1.6 x 10-5 M3.
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