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A stock solution of lactic acid is 0.04M and a stock solution of lactate is 0.25M.Calculate the pKa of lactic acid given that at these concentrations the pH is 3.90
A 4.30 g nugget of pure gold absorbed 293 J of heat. The initial temperature was 29.0°C. What was the final temperature?
A titration was performed to determine the solubility product constant (Ksp) of an unknown iodide with formula . The first two steps of the reaction sequence are shown below:
A chemist studying the properties of photo- graphic emulsions needed to prepare 500 mL of 0.18 M AgNO3 (aq). What mass of silver nitrate must be placed into a 500 mL volumetric ?ask, dissolved, and diluted to the mark with water? Answer in units o..
For the reaction represented by the equation Cl2+2KCl+ Br2, how many grams of potassium chloride can be produced from 300. g each of chlorine and potassium bromide.
Nitrogen (80 kPa), oxygen (21.0 kPa), carbon dioxide (0.03 kPa), and water vapor (2.0 kPa) are the usual atmospheric components. What is the total atmospheric pressure in kPa.
Description of amino acids, Chiral compounds occur when a carbon atom has four different things bonded to it. All but the simplest amino acids (glycine) are chiral because the alpha carbon has an amine group
A 0.100 M solution of a weak acid, HX, has a pH of 2.110. What is the value of Ka for HX?
A mysterious material was purified from safflower oil (hint: full of fatty acids). Upon ozonolysis it gave the following compounds in their respective molar ratios.
If 45.8 grams of aluminum metal are reacted with excess HCl, what volume of H2 gas would be generated at 23.0 ºC and 1.00 atm pressure?
what is the final temperature of A metal sample weighing 34.526 g was heated to 98.0 degrees Celcius then quickly transferred into a styrofoam cup calorimeter containing 74.365 g of distilled water at a temperature of 27.0 degrees celcius.
Write the structures (or name the structures) for the major monobromination products that would be formed from each of the following substrates used.
The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (C3H8) to burn it completely.
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