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(a) Express the second law of thermodynamics as a mathematical equation.
(b) In a particular spontaneous process the entropy of the system decreases.What can you conclude about the sign and magnitude of ?Ssurr?
(c) During a certain reversible process, the surroundings undergo an entropy change, ?Ssurr = -78J/K. What is the entropy change of the system for this process?
What is the order of increasing polarity of the compounds: benzophenone, trans-stilbene, 2-naphthol, benzoic acid
Describe how you will prepare a H2PO4-/HPO42- buffer using solid sodium dihydrogen phosphate and sodium hydrogen phosphate (pH 7.4, 500 mL 0.40M each). How much solid is needed to prepare each solution? How much volume of each of the solutions sho..
Show the mutarotation of beta-D-glucopyranose to the alpha-D-glucopyranose. Show the open chain intermediate.
Assign oxidation numbers to all the elements in the following reaction and identify the oxidizing and reducing agents. HNO3+ I2--->HIO3+NO2+H2O
Draw the structure of the molecule that is formed by the condensation reaction of glycine and cysteine, resulting in the formation of a peptide bond.
In the presence of excess oxygen, what mass of NH3 is required to release 2175 kJ of enthalpy to the surroundings with this reaction at standard temp and pressure
the limiting current of lead in an unknown solutions is 5.60mua. one ml of a 1.00 x 10-3m lead solution is added to
Calculate the theoretical yield of C2H5Cl when 123g of C2H6 reacts with 213g of Cl2 , assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
What is the balanced formula unit equation for the reaction Mercury(II) nitrate reacts with sodium sulfide to form mercury(II) sulfide, which is very insoluble, and sodium nitrate
4.60 mol of solid A wasplaces in a sealed 1.00 L container and allowed to decompose into gaseous B and C. The concentration of B steadily increased until it reached 1.10M where it remained constant.
When 76.0 grams of calcium and 36.9 grams of nitrogen gas undergo a reaction that has a 90.0% yield what mass of calcium nitride is formed?
Bond length is the distance between the centers of two bonded atoms. On the potential energy curve, the bond length is the internuclear distance between the two atoms when the potential energy of the system reaches its lowest value.
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