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Explain the electron configuration of B is 1s2, 2s2, 2p1 if each core electron that is the 1s electrons were entirely effective in shielding the valance electrons that is 2p and 2s electrons from the nucleus also the valence electrons did not shield one another, define what would be the shielding constant(s) as well as the effective nuclear charge Zeff for the 2s and 2p electrons?
In fact the shielding constants for the 2p and 2s electrons in B are slightly different. They are 2.42 and 2.58 respectively. Compute the Zeff for these electrons and define the differences from the values you found in part a.
10.0 mL of a 0.30 M sodium phosphate solution reacts with 20.0 mL of a 0.20 M lead(II) nitrate solution (assume no volume change). What is the concentration of nitrate ions left in solution after the reaction is complete
a mass of .1 kg of helium fills a .2m3 rigid vessel at 350 kpa. the vessel is heated until the pressure is 700 kpa.
find the theoretical percent yield amp percent error of the reaction.zirconium oxalate k2zrc2o43h2c2o4middoth2o was
Write the balanced reaction for the neutralization of acetic acid with sodium carbonate. Explain why CO2 gas is liberated.
Calculate the average translational kinetic energy (sometimes just called average kinetic energy) for one mole of gas at 385 K.
A mixture of Ar and N2 gases has a density of 1.416 at STP. What is the mole fraction of each gas?
Write the reaction of the borohydride ion with water using curvy arrows to show electron movement to form one molecule of H2. Draw a complete line structure for the borhydride ion.
If the volume of a gas container at 32.0°C changes from 1.55 L to 755 mL, what will the final temperature be
Zinc and sulfur react to form zinc sulfide by the equation shown below. How many grams of ZnS can be formed when 12.0 g of Zn reacts with 6.50 g of S? (Atomic mass: Zn = 65.38, S = 32.06).
aliquot of the HCl solution required 13.98 mL of 0.08485 M potassium permanganate (KMnO4) to reach the purple endpoint. A blank required 0.08 mL. Balance the reaction below and determine the percent WO3 in the ceramic sample.
a sample of hydrogen effuses through a porous container about 9.00 times faster than an unknown gas. estimate the molar
Calculate the pH of a solution prepared by dissolving 18.32 grams of benzoic acid and 43.23 grams of sodium benzoate in water sufficient to yield 1.00 L of solution.
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