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A 2.00L buffer solution is 0.250M in HC2H3O2 and 0.250M in NaC2H3O2. Calculate the pH of the solution after the addition of 0.100 moles of solid NaOH. Assume no volume change upon the addition of base.
Ammonium carbamate (NH2COONH4) is found in the blood and urine of mammals. At a temperature of 466 K, Kc = 0.080 for the following equilibrium: NH2COONH4(s) 2 NH3(g) + CO2(g). If 10.2 g of ammonium carbamate is introduced into a 0.500 L containe..
Ribonuclease P proteins RPP21 and RPP29 bind one another during complex assembly. Thermodynamic measurements reveal that ΔH° = -66.3 kJ/mol and ΔS° = -73.2 J/mole*K at 40°C. What is the equilibrium constant for the binding reaction at 40°C?
how many atoms of copper are there in this wire?
If the initial concentration of the reactant in a first order reaction is .5 mols/L and the half life is 500 seconds, calculate the concentration of the reactant 1200 seconds after initiation of the reaction?
The Eriochrome Black T indicator is mistakenly omitted. what is the color of the analyte (standard Ca^2+ solution)? Describe the appearance of the analyte with the continued addition of the Na^2H^2Y solution? Explain?
In a titration experiment to determine the Ksp of Calcium Hydroxide, we titrated our prepared Ca(OH)2 solution with a standard hydrochloric acid solution
What is the volume in centimeters cubed of a marble with the diameter of 1.5 cm? Use the formula Volume = 4/3 pi x (radius)3.
What is the numerical value of the rate constant and what are the units? and Calculate the rate of this reaction when the initial concentrations of OCl- and I- are 7.6 x10-3 M and 9.6 x 10-3M respectively.
Describe how you will prepare a buffer system of 0.50 M nitrous acid and sodium nitrite, pH 3.60.
Paradichlorobenzene, C6H4Cl2 is a component of mothballs. A solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39 C . The boiling point of pure cyclohexane is 80.70 C. Calculate Kb for cyclohexane. Express the constant numerically in degrees C..
Calculate the Calorimeter Constant if 25 g of water at 53C was added to 25 g of water at 25C with a resulting temperature of 35C?
A gaseous mixture of and has a density of 1.104 at 445 and 300 . What is the mole percent in the mixture?
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