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A mixture of amino acids is subjected to paper electrophoresis at pH 6.0. The amino acids present in the mixture are Val, Glu, Phe, Ser, and Lys. Which amino acids will migrate toward the cathode? Toward the anode? Explain.
On a quantitatively labeled number line, draw where the radial nodes of the 1s, 2s, and 3s hydrogen wavefunctions sit.
A sample of He gas (V = 3.0 L) at 5.6 atm and 25 °C was combined with 4.5 L of Ne gas at 3.6 atm and 25 °C in a 9.0 L flask (which was initially evacuated).
Compute how many titanium atoms are there in 24.1 grams of titanium and also determine what is the mass in grams of 3.23E+23 atoms of titanium.
Determine the molality of a solution prepared by dissolving 0.500 moles of CaF2 in 11.5 moles H2O.
Calculate the ratio of the potential energies for the interaction of a water molecule with an Al3+ ion (of radius 53 pm) and with a Be2+ ion (of radius 27 pm).
In the combustion reaction of 149 g of propane with excess oxygen, what volume of carbon dioxide if produced at STP?
A voltaic cell consists of a Mn/Mn2+ electrode (E°= -1.18 V) and a Fe/Fe2+ electrode (E°= -0.44 V). Calculate [Fe2+] if [Mn2+] = 0.050 M and Ecell = 0.78 V at 25°C.
You have 75.0 mL of a 2.50 M solution of Na2CrO4(aq). You also have 125 mL of a 1.52 M solution of AgNO3(aq). Calculate the concentration of CrO4 2- after the two solutions are mixed together.
Drag the flask and drop it on the lower half of the burette to connect them. Open the Data window and click on the flask. Click the Pushpin icon in the blue bar of the Data window to lock its display to the flask's contents.
Calculate the standard cell potential at 25 C for the reaction X(s)+2Y+(aq)?X2+(aq)+2Y(s) where ?H? = -651kJ and S = -371J/K.
Primary alcohols can be oxidized to aldehydes and carboxylic acids. Often it is difficult to stop at the aldehyde oxidation state. One method frequently used to accomplish
The value of Ka for monochloroacetic acid is 1.35 multiplied by 10-3. Calculate the pH of a 0.24 M solution of monochloroacetic acid.
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