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Determine the molarity of the solution If 3.00 grams of Ammonium sulfate is dissolved in enough H2O to form 300. mL of solution,?
The rate constant or the decomposition at 660K = 4.5 X 10^-2 s^1. determine the pressure of substance after 60s ) If we begin with an initial SO2Cl2 pressure of 450 torr?
Calculate the number of grams of anhydrous sodium oxalate needed to prepare 250 mL of .04500 M sodium oxalate solution.
A 47.60 g sample of liquid magnesium at 738.0 °C is poured into a mold and allowed to cool to 28.0 °C. How many kJ of energy are released in this proces
The calorimeter cup had several millimeters of water in it when you added the HCl in Step 16: b.) The base solution was added to the acid solution but was not stirred while temperature measurement were not made: c.) Some of the base splashed out o..
sodium hypochlorite is potentially dangerous because of the basicity of ClO-. What is the [OH] in an aqueous solution that is 6.5% NaClO by mass? What is the pH of the solution
a metal object with a mass of 19g is heated to 96 degrees C, then transferred to a calorimeter containing 75 g of water at 18 degrees C. The water and metal object reach a final temperature of 22 degree C.
why is a solution containing dissolved brass made basic with concentrated NH3 and again with acidified CH3COOH?
The rate constant of a reaction is 2.6*10-3s^-1 at 25 c, and the activation energy is 33.6kJ/mol. What is k at
degree C is mixed with 35.2 g/mL of water (density = 1.0 g/mL) initially at 24.4 degree C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
What length of a cylindrical piece of tungsten wire having a radius of 3.71 mm has a mass of 61.3 g? The density of tungsten is 19.25 g/cm3.
Calculate the mass of KHC8H4O4 ( molar mass 204.44 g/ mol) that reacts with 15 mL of the NaOH solu-tion in Part A. 3. NaOHsolu-tioninPartA.3.
A solution of .601g of the solid in 34.1g of the solvent diphenyl gave a freezing point depression of 1.17 degree celsius. Calculate the molar mass and molecular formula of the solid(k1 for diphenyl is 8.00 degree celsius/m)
As a technician in a large pharmaceutical research firm, you need to produce 400 mL of 1.00 M potassium phosphate buffer solution of pH = 7.29. The pKa of H_2PO_4^- is 7.21.
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