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Explain what is a quantum number? The number of sublevels within each energy level. That is for energy level n=1, there is only 1 sublevel, but for n=4, there are 4 sublevel.
Explain how are sublevels indicated?
Number electrons allowed in each sublevel?
Define what is the sequence for filling the levels with electrons?
Be able to write correct outline for electron dot structure.
Define what is ionization energy and what does it relate to?
consider the trioxane equilibria illustrated below trioxane itself is a hypnotic agent used therapeutically. use pc
A 0.050 M H2S solution contains 0.19 M NiCl2 and 0.35 M Hg(NO3)2. What pH is required to precipitate the maximum amount of HgS but none of the NiS
Calculate the equilibrium constant Ksp for Mg(OH)2 (s) at 25 degrees celcius. Is the dissolution of Mg(OH)2 endothermic or exothermic
How much energy would be required to melt 74 g of HCl at its melting point of -110.8 ? C? ?Hfus for HCl is 14.2 cal/g and ?Hvap for HCl is 98.7 cal/g. Answer in units of cal.
What is the heat kcal released when 50.0 g of water at 100 degrees C hits the skin and cools to a body temperature of 37 degrees C
A 50.00mL solution of 0.100M Cd2+ is titrated with 0.100M EDTA buffered at a pH of 7.2. What is the Cd2+ concentration at the equivalence point. Kf CdY2-= 2.9e16, Ka1 EDTA= 1.02e-2, Ka2 EDTA= 2.14e-3, Ka3 EDTA= 6.92e-7, Ka4 EDTA= 5.5e-11
Chlorine gas was bubbled through a 100mL sample of a .356 M NaI solution until the reaction was complete. How many moles of molecular iodine were produced
calculate the energy (in kJ) of a photon which has a wavelength of a mircowave with a wavelength of 2.84 cm
Enough of a monoprotic acid is dissolved in water to produce a 0.0200 M solution. The pH of the resulting solution is 6.32. Calculate the Ka for the acid.
Suppose you were instructed to add 38 g of sodium chloride (NaCl) to 100 mL of water. a. prepared as instructed at 20°C b. heated the mixture in (a) to 100°C. Describe what you would observe under the following conditions.
Determine q for the acid-base reaction, assuming that the liquids have densities of 1.00 g/mL and the same heat capacities as pure water.
A solution at pH 7 contains a weak acid, HA. The pKa of the acid is 6.5. What is the ratio of [A-]:[HA]
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