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Describe a common buffer system and elution method in ion exchange chromatography. What are the salt ions in the elution buffer good for?
if the syinge colume had been incorrectly read, giving a calculated system volume of 25.6 mL, what would have been the percent error in the calculated value of R?
What will the concentration of alpha glucose be after equilibrium is attained? b. What will the concentration of beta glucose be? c. What would have happened if you began with 1M of beta glucose?
If the energy required to break apart a mole of chlorine molecules is 243KJ, a photon of what frequency will break apart a single Cl2 molecuule. What is the wavelength of the photon
Given the equation HCl + NaOH--> H2O + Na+ Cl-, how many moles of water are produced in this reaction. Additional info: .500M HCl used, .500 M NaOH used, and delta H^0 is known to be -57.86 kJ/mol water formed
An oligomeric protein has a molecular weight of 168000. A 420 mg sample was treated with an excess of 1-fluoro-2,4-dinitrobenzene (Sanger\'s reagent) until the reaction was complete
Calculate the "molar heat of dissolution" (kJ/mol). Recall heat capacity of water is 4.184 J/g degrees celsius.
What is the concentration of the H 2 SO 4 if a chemist titrates 300.0 mL of Sodium Hydroxide NaOH with a 5.0 M solution of NaOH and needs only 3.4 mL of the base to reach the endpoint,?
What is the mass percent, expressed to the proper number of significant figures, for each metal in the original metal mixture? Define all variables, show units, and show algebraic steps to your the answers.
Describe a simple and practical way to make 1.00L of this buffer solution, assuming 1.0 M solution of the molecular base is available and that the chloride salt of the conjugate acid is available as a SOLID.
What happens if student forgets to rinse the buret with a small portion of EDTA solution. (Buret contains water droplets from washing.) If this incorrect concentration of EDTAis used to calculate the ppm CaCO3
An unknown metal reacts with oxygen to give the metal oxide, MO2. Identify the metal based on the following information: Mass of Metal: 0.356g
A 493 mL sample of solution contains 33.2 g of CaCl2 Calculate the molar concentration of Cl in this solution
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