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A bioengineer preparing cells for a cloning experiment bathes a small piece of rat epithelial tissue in a TRIS buffer, (HOCH2)3CNH2. The buffer is made by dissolving 44.0 g TRIS (pKb = 5.91) in enough 0.065 M HCl to make 1.00 L of solution.
What is the molarity of TRIS?
What is the pH of the buffer?
solution were added to 12.00 mL of an aqueous 0.025 M Fe3+ solution. The total volume of the solution is 20.75 mL. What is the initial diluted Fe3+ concentration?
Find out the formula of the gas produced if Na 3 P(s) sodium phosphide, is reacted with H 2 O
ichromate solution is 0.0189 M dichromate, and it took 26.01 mL of your standard iron solution to titrate the excess dichromate in an unknown. What is the chemical oxygen demand of the sample, in units of mg O2/L?
Determine the oxidation of each element in the following compounds: a. CH3COO- b. NaClO3 c. Al2O3
Give the structural formulas for all of the different alkenes that can be hydrogenated with h2/pt to produce n propyl cyclohexane
What is the pH at the equivalence point? what is the pH at the 10.0 mL base added? what is the pH at the 30.0 mL base added?
a student ran the following reaction in the laboratory at 310 k2 nog br2g 2 nobrgwhen she introduced 0.140 moles of
Explain why the wild horse analogy can be used to help explain a certain type of chemical bonding
Compute the ΔH for this reaction and express your answer in kilojoules if the given . Bond Energies (kJ/mol) are N-Cl 201 , Cl-Cl 243 , N-H 389 ,H-Cl 431
Water with an alkalinity of 2.00 X 10^-3 equivalents/L has a pH of 7.00. Calculate [CO2], [HCO3-], [CO3^2-], and [OH-].
you measure 2.34 grams of potassium dichromate k2cr2o7 into a volumetric flask. you dilute the potassium dichromate
A solution is prepared by dissolving 75.0 g HCl(g) in enough water to make 350.0 L of solution. The ph of this solution is?
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