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your lab manager has asked your lab partner to separate Pyridine Pka of conjugate acid:5.30 and phenol pka :10 using reverse phase HPLC, you and your lab partner are both eligible for the same promotion, and while you have have nothing against your lab partner, you really want the promotion. you decided to sabotage your lab partner;s to separate the two compounds . list two ways that you could adjust your lab mobile phase that would almost guarantee a more difficult separation. explane your reasoning?
after 42 days a 2.0 g sample of phosphorus 32 contain only 0.25 g of the isotopt. what is the half life of the
If a current of 2.00 ampere is passed for 48 hours, what mass of aluminum id deposited at the electrode? Assume 100% current efficiency.
The 13C nucleus is a spin 1/2 particle, which means it can orient in two directions in a magnetic field (with the field and against it). The difference in energy between the two orientations is given by:
Enough of a monoprotic acid is dissolved in water to produce a 0.0142 M solution. The pH of the resulting solution is 2.51. Calculate the pKa for the acid
given that the rate constant for the decomposition of rm x is 1.60 m-1cdotrm min-1 calculate the concentration of rm x
Considerning the electrons in the shells, subshells, and orbitals of an atom, state how many electrons have: of electrons
what are the variables dependent independent and control in this experiment?ca2h2o-----gtcaoh2h2changing the
Describe two independent methods for determining the atomic mass of an element. Explain how these method are truly independent.
Pressure and temperature remain constant. What is the new voume if 0.500 mole O2 gas is added?
Calculate the concentration of bicarbonate ion, HCO3 -, in a 0.010 M H2CO3 solution that has the step wise dissociation constants Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.
What is the total linear interaction coefficient (macroscopic cross section) for a thermal neutron in the natural uranium? What is the total macroscopic fission cross section for thermal neutrons
Show your calculations for the pH when 0.00 mL, 4.00 mL, 6.00 mL, 12.00 mL (equivalence point), and 16.00 mL of 0.10 M HCl have been aded to an initial
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