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what is the difference between the solvents used to run TLC's of polar and non-polar lipids? Why is this so?
Following a terrorist release of Cesium-137 (half-life of 30 years) in downtown, clean up efforts were successful in removing all but 100 curies. How long will it take for the contamination to decay to about 5 curies?
A metal, M, was converted to the chloride, MCl2. Then a solution of the chloride was treated with silver nitrate to give silver chloride crystals, which were filtered from the solution.
Given that the density of aluminum is 2.70g/cm^3, What maximum length of aluminum lil can be made from 1.10 kg of aluminum?
A 1.90 g sample of a large boimolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule
Determine whether each of the following causes an increase or decrease in the activity of the electron transport chain. large difference in H+ concentration across the inner mitochondrial membrane
What mass of sucrose should be combined with 467 g of water to make a solution with an osmotic pressure of 8.30 atm at 300 K? (Assume the density of the solution to be equal to the density of the solvent.)
Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0399 M phenol--a dilute solution.
How much of methane gas will be produced in anaerobic decomposition assuming a complete conversion of MSW into CH4CO2NO, and SO2.
A 455-g piece of copper tubing is heated to 89.5 oC and placed in an insulated vessel containing 159 g of water at 22.8 oC. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel
If 0.90 mole of MnO2 and 48.2 g of HCl react, which reagent will be used up first?
What is the density (in grams per liter) of a gas mixture that contains 26.0 % F_2 and 74.0 % He by volume at 743 mm Hg and 28.5 C?
Why does phenolphtalein change colour during the production of gas?
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