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What concentrations of acetic acid (pKa = 4.76) and acetate would be required to prepare a 0.15 M buffer solution at pH 5.0? Note that the concentration and/or pH value may differ from that in the first question.
How many electrons are present in the atom with its 1s,2s,2p, and 3s subshells filled with 4 electrons in the 3p subshell. what is the element
How much heat is required to warm 225 grams of ice from negative 46.8 degrees celsius 0 degrees celsius melt the ice, warm the water from 0 degrees celsius to 100 degrees celsius.
A sample of gas (24.2 g) initially at 4.00 bar was compressed from 8.00 L to 2.00 L at constant temperature. After the compression, the gas pressure was ________ bar.
Tripeptide Protein: Acidic, Basic, or Neutral? Alanine has an R-group structure of CH3, cysteine has an R-group structure of HS-CH2, and aspartic acid has an R-group structure of HOOC-CH2
an equimolar mixture of hydrogen and deuterium effuses through an orifice at a certain temperature. calculate the
The mass of water in the inner water bath is 1.376*10^3g. The temperature of the calorimeter and its contents rises 3.11K as a result of this reaction. Calculate the calorimeter constan.
Compare this general form of this phase diagram with the interactive phase diagram for CO_2 and classify points a through g on the phase diagram according to the number of phases present at each point.
Calculate the approximate volume of 0.02M KMnO4 (in the unit of mL) needed to titrate 0.17 g sodium oxalate.(Note: The KMnO4 solution will be added from a buret to a flask during titration.
Problem- If you were to saponify ethyl tridecanoate, would you expect the product to generate foam when mixed with water. Explain.
Draw a mechanism to demonstrate how pyridine catalyzes the hydrolysis of acetic anhydride to two molecule of acetic acid. Is this reaction reversible?
The solubility product constant for Ce(IO3)3 is 3.2 *10 ^-10, What is the Ce3+ concentration in a solution prepared by mixing 50.0 mL of 0.250 M Ce 3+ with 50.0 mL of 0.040 M IO3^-?
Derive the activation energy for a reaction that proceeds 2 times faster when the temperature is raised from 20 C to 30 C.
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