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Concentrated hydrochloric acid is 38% HCl by weight and has a density of 1.19 g/mL. A solution is prepared by measuring 63 mL of the concentrated HCl, adding it to water, and diluting to 0.900 L. Calculate the approximate molarity of this solution from the volume, percent composition, and density.
Compute the composition of the crystals and the yield of the process. Also determine the composition of the mother liquor?
Calculate the radius of the metal atom. A hypothetical metal has a face-centered cubic unit cell with the edge length of 4.943 Å.
A sample of of H2O with a mass of 46.0 grams has the temperature of 100C ,how many jolues of energy are necessary to boil the water.
Write down the electron configurations for C2 and F2. What is the bond order for each? Which one is likely to have larger bond dissociation energy.
Vitamin b6 is needed in the metabolism of amino acids. When it binds to an enzyme it forms a complex with the e-amino group of lysine, which is a primary amine.
How long would it take for 1.50 mol of water at 100.0 degrees Celsius to be converted completely into steam if heat were added at a constant rate of 15.0 J/s.
Calculate the pH of a solution formed by mixing 65-mL of 0.22M NaHCO3 with 75-mL of 0.15M Na2CO3.
A sample of 30.0 ml of krypton gas, Kr, is at 756 mm Hg and 25.0 degree celsius. What is the new volume if the pressure is decreased to 325 mm Hg and the temperature is decreased to -12.5 degree celsius?
How many liters of ethane, measured at 17.0 degrees Celsius and 719 Torr, must be burned to liberate 2.94 X 10^4 kJ of heat?
Separation of Amines and Carboxylic Acids Using Extraction, Initially have a sample of a water-insoluble, neutral organic compound dissolved in 50 mL methylene chloride that may be contaminated with
The water level in a graduated cylinder was at 211 rises initially it raised to 270 after adding a piece of lead is submerged. Determine the mass in grams of the lead?
Suppose that a 4.0 L sample of gas at 1.0 atm is heated from 44°C to 53°C, during this process the volume doubles. What will the final pressure of the gas sample be
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