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The determination of Lithium (AW = 6.968), in a blood sample is performed as follows:
100 mL of blood, diluted 1mL, produces a signal equal to 6.7 cm on the chromatogram.
A solution similar to that described above was prepared, but 10 mL of 0.010 M LiNO3 was also added. This solution was analyzed to produce a 14.6 cm signal. Assuming there is linearity between the chromatographic signal and the lithium concentration, what will be the concentration of lithium in the patient's original blood sample, in parts per million?
Given that the molar freezing point constant of benzene is 5.12* C/m, what is the molar mass of the unknown compound?
Show how to synthesize 2-methyl-2-pentene from an alkyl halide and a aldehyde or ketone, plus any other necessary reagents.
The average kinetic energy of the molecules in a gas sample depends only on the temperature, T. But given the same kinetic energies, a lighter molecule will move faster than a heavier molecule.
For any gas, the voulme the gas occupies is directly proportional to the number of moles of gas at a given temperature and pressure. Air is 21.0% (by volume) O2 How many moles of oxygen are present in 10.0 moles of air
draw a dot and cross diagram to show the bonding in ch2f2. your diagram only needs to show the outer shell
With the pure solvent in the light path, the meter reading is 78; with a 0.1 M solution of a solute in the same solvent, the meter reading is 55. The light path is 0.5 cm. Calculate the absorbance, the transmittance, and the molar absorption coeff..
A 4.62g example of a uranium-containing material needs 32.0 mL of the solution for titration. Define the oxidation of the uranium can be represented by the change UO(2+) --> UO2(2+). Compute the percentage of uranium in the sample
Two liquids, and , have vapor pressures at a given temperature of 24 and 36 , respectively. We prepare solutions of and at a given temperature and measure the total pressures above the solutions. We obtain the following data
Given the following set of reations and their associated heats of reactions calculate delta H for the following reaction: 2NH3(g) + 3N2O(g)
You begin an experiment with 0.20 M reactant A and 0.40 M reactant B. After the reaction has been allowed to achieve equilibrium, you have 0.10 M product C. What molarity of A do you have remaining at equilibrium
Use the Heisenberg uncertainty principle to calculate the uncertainty (in meters) in the position of a honeybee weighing 0.67 and traveling at a velocity of 0.80
Use the following data to calculate the combined heat of hydration for the ions in sodium acetate (NaC2H3O2): Hlattice = 763 kJ/mol; Hsoln = 17.3 kJ/mol
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