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A protein solution is prepared utilize acetate buffer (pH 4.7). Explain how do you replace the acetate buffer with a phosphate buffer (pH 7.0) without taking drastic measures such as precipitating the protein and resuspending it in the new buffer?
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What is the chemical name for S6O and what is the chemical name for S7O2?
A 41 kg person walking 5.6 km/hr requires 758 kJ of energy per hour. How much further does he have to walk to consume the addition energy contained i 320 g of ground beef relative to 320 g of broiled chicken? The energy ...
A solution has a concentration of 10.0 m and contains 5.0 g NH3. What is the volume (in milliliters) of this solution
A mass of 8.15 gC 2 H 4 ( g ) reacts with excess oxygen. If 16.2 g CO 2 ( g ) is collected, what is the percent yield of the reaction? C 2 H 4 ( g ) + 3O 2 ( g )® 2CO 2 ( g ) +2H 2 O( g )
One liter of nitrogen (N 2 ) and one liter of carbondioxide (CO 2 ), initially at one atmosphere pressure, are forcedinto a single evacuated 500 mL vessel. What is the total pressure, in atmospheres,if the temperature re ...
Calculate the volume of 6.0M NaOH solution that you would need to prepare 500mL of a .15M NaOH solution. (formula weight of NaOH = 40.00g/m)
When benzene (C6H6 ) reacts with bromine (Br2 ), bromobenzene (C6H5Br ) is obtained: C6H6+Br2→C6H5Br+HBr What is the theoretical yield of bromobenzene in this reaction when 28.0 g of benzene reacts with 60.7 g of bromine ...
What is the volume of a solution, in milliliters, that contains 1.5 g LiNO3 and has a concentration of 0.40 M?
What is the molarity of a solution made by dissolving 20.0 g of CrCl2 in 0.150 L of solution?
A student is doing the experiment Chemical Formulas of Copper Sulfide by heating copper with excess of sulfur at very high temperatures using a Bunsen burner. Copper and sulfur react stoichiometrically and excess of sulf ...
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