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A saturated solution of Na2SO4, with excess of the solid, is present at equilibrium with its vapour in a closed vessel.
(a) How many phases and components are present.
(b) What is the variance (the number of degrees of freedom) of the system? Identify the independent variables.
A Solution is made by dissolving 8.5 grams of NaOH in 2.3 L of water. What is the molarity of the solution?
Consider the following reaction for the dissociation of benzoic acid (MW=122 g x mol^-1) in water where Ka for benzoic acid is 6.5 x 10^-5. C6H5COOH(aq) + H2O (l) C6H5COO-(aq) + H30+(aq)
Descrbe the pH of a buffer soluton consisting of 100mL containing 0.1M CH3COOH and 0.125 CH3COO-, both before and after the additon
A sample of gas has an initial volume of 13.8L at a pressure of 1.26 atm If the sample is compressed to a volume of 10.8L, what will its pressure be?
Explain why the rates of diffusion of nitrogen gas and carbon monoxide are almost identical at the same temperature.
What was the chemical reaction in the body, and what substance in the liver was produced to help catalyze the reaction?
How many grams of sulfur (S) are needed to react completely with 355g of mercury (Hg) to form HgS?
Transition metals can combine with carbon monoxide to form compounds such as Fe(CO)5 and Co2(CO)8. If you combine 0.150 g Ni with CO and isolate 0.437 g Ni(CO)x
The free energy change Delta G at 2400 K is equal to 1.22*10^5 J/mol. Calculate the equilibrium constant at 2400 K
Element 107 was made by bombarding Bismuth-209 with Chromium-54. One product is a neutron, what is the balanced equation?
Which of the following elements are diatomic gases at 25 degrees celsuis and one atm: H, He, C, N, O, F, Ne, P, S, Cl, Ar, Se, Br, Kr, I, Xe, and Rn?
Indicate how many electrons are transferred in the formation of one formula unit of product
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