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Use Slater's rules to calculate the shielding constant and effective nuclear charge for a 5s, 5p, and 4d electron in the tin atom. Which of these electron experience the lowest effective nuclear charge?
the air in the laboratory was measured with a barometer to be 7.20 x 10 squared mm Hg. what is the laboratory air pressure in atm.
A protein biochemist attempted to determine the amino acid sequence of a decapeptide. Use the results fromt he trypsinm chymotrypsin, and cyanogen bromide treatments to suggest the amino acid sequence.
The normal boiling point of acetone is 56.5°C. At an elevation of 5300 ft the atmospheric pressure is 630. torr.a. What would be the boiling point of acetone (AHvap = 32.0 kJ/mol) at this elevation?
What is the value of Kf for acetic acid, given that its freezing temperature is 16.6 C and its density is 1.049 g/mL?
In the neutralization reaction: HCl (aq) + NaOH (aq) = NaCl (aq) +H20, 25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is ?
The solubility product of PbBr2 is 8.9x10^-6. Determine the molar solubility in the following. (a) pure water (b) 0.20 M KBr solution (c) 0.15 M Pb(NO3)2 solution
Citric acid is a triprotic acid with pKa1=3.15; pKa2=4.77; pKa3=5.19. Calculate the concentrations of all species in solution.
Starting with 0.86 moles of HF, calculate the number of moles of H2O that is produced by this balanced reaction.
Maintenance of pH is vital to the cells of all living organisms because enzyme activity is influenced by pH. What is the intracellular pH range of most cells?
Using the Nernst equation, calculate the effect on the cell potential of increasing the Fe2+ ion concentration from 1.0 M to 2.0 M for each of the following reactions. The concentration of the other solution remains at 1.0 M
Calculate the kg/h of wet cake feed needed to produce 1000 kg/h of "dry" ?sh cake product.
A sample of sodium reacts completely with 0.355 of chlorine, forming 585 of sodium chloride. What mass of sodium reacted?
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