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Problem- Explain why there was a decrease in entropy when the solid dissolved. That is, the reaction Ca(OH)2 (s) --> Ca(OH)2 (aq) represents a decrease in chaos for the system. Discuss the role of the solvent and how the dissolved solute could impact the entropy of solvent.
State your answer by means of three significant figures.
Compound A has a λmax at 232 nm in its UV spectrum but will not react with any dienophile in a Diels-Alder fashion. Provide a structure for Compound A, and explain how you arrived at your decision.
Calculate the number of milliliters of stomach acid neutralized by 1 tablespoon of milk of magnesia (1 tablespoon = 3 teaspoons).
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO
1.00 mol HF and 0.500 mol NaOH are both dissolved in water making 1.00L solution. Calculate the pH of the solution
What mass of MgNH4PO4 precipitated when 200.0ml of a 1.000% (w/v) solution of MgCl2 were treated with 40.0ml of 0.1753 Na2PO4 and an excess reagent of NH4+
Microwave ovens emit microwave energy with a wavelength of 12.2 cm. What is the energy of exactly one photon of this microwave radiation
The entry of Na+ provides a free energy input of 10.8 kJ/mol under typical cellular conditions (external [Na+]= 143 mM, internal [Na+] = 14 mM, and membrane potential -50 mV (outside negative relative to inside)) How large a concentration of gluco..
It takes 12 hours for half of the He in a container to leak out. If the same container is refilled with Ne, how long will it take for half of the Ne to leak out
Compare the rate at which pH changes when HCl is added to the buffer solution the the rate of change when no buffer or base is present (distilled water).
a cube of zirconium has a mass of 343 g. if each side of the cube has dimensions of 3.75 cm what is the density of
Cobalt-60, which undergoes beta decay, has a half life of 5.26 years.
Choose the selection which correctly characterizes all three of the following substances in terms of whether they are polar or nonpolar: IF and NCl3 and SiF4
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