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Kilimanjaro in Tanzania is the tallest peak in Africa (19,340 ft.). On a particular day, the barometric pressure at the top of the mountain was 341 torr. On that day, at what Celsius temperature did water boil on the top of the mountain?
protein used as standards on an SDS- polyacrylamide gel are 0.80 and 0.41, respectively. What is the apparent mass of a protein having a mobility of 0.62 on this gel?
Inversion of Configuration and Determination of R/S. Draw a compound with an asymmetric center. Rotate so that you can determine whether it is R or S. Invert the stereochemistry
How many Carbon 14 atoms are in a charcoal sample that has a decay rate of 3500 disintegrations per min
(a) 0.519 M acetic acid (weak acid with Ka = 1.8e-05). (b) 0.802 M hydrocyanic acid (HCN) (weak acid with Ka = 4.9e-10). (c) 0.693 M pyridine (weak base with Kb = 1.7e-09).
Write down the expression for the radial distribution function of a 3p electron in a hydrogenic atom and determine the radius ar which the electron is most likely to be found
The formal charge on the P atom is zero and It is best described with three resonance structures.
When 350.0 mL of 0.45 M benzoic acid is titrated with 0.15 M NaOH, what is the pH of the solution after 200.0 mL of base has been added? The pKa for benzoic acid is 4.19
In the titration of a solution of the extremely weak acid, HCN (Ka = 6.2 x 10-10), by a solution of sodium hydroxide of equal concentration,
In order to produce 10000.0 kJ of energy, how many grams of oxygen must react?
The dipole moment, meu, of HBr (a polar covalent molecule) is 0.82 D (debye), and its percent ionic character is 12.1%. Estimate the bond length of the H-Br bond in picometers.
Carbon monoxide gas reacts with hydrogen gas at elevated temperatures to form methanol according to this equation. CO(g) + 2 H2(g) CH3OH (g)
Isotope 1 has a mass of 107.0 amu and an abundance of 55.9%. Isotope 2 has a mass of 109.0 amu. What is the atomic mass of the element?
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