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Explain why is alcohol added to the initial mixture in the preparation of soap as well as what happens to it at the end of the reaction?
Given that the partial pressure of O2 in the atmosphere is 0.20 atm and the concentration of H3O+ is 2.0 x 10-6 M, determine the half-cell potential for the reduction of O2 according to the reaction: O2 + 4 H3O+ + 4 e- ? 6 H2O E° = 1.229 V
an aluminum tank of volume 0.0300 m3 is filled to the top with mercury at 20.0 degc. the tank is placed inside a
If 125 calories of heat is applied to a 60.0 grams piece of copper at 21.0 degrees Celsius, what will the final temperature be? The specific heat of copper is 0.0920 calories per grams times Celsius.
Explain the general physics of chromatography. Illustrate these general principles with regard to paper, thin layer, gas, liquid, and super-critical fluid column and open tube chromatography.
What is the wavelength (in nm) of a photon emitted during transition
The volume of Ba2+ required to reach the endpoint is 22.40 mL. What is the calculated molar mass of the sulfate present in bottle A
How many grams of potassium hydroxide (KOH) must be dissolved in 820 mL of water to make a solution with a pH = 11.1?
a corrosion technologist pipetted a 100.00 ml hard water sample and titrated it with 37.64 ml of 0.01 m edta solution
Calculate the pH at the midpoint and at the equivalence point for a titration of 25mL of 0.100M potassium hydrogen phthalate with 0.100M KOH.
the molality of a solution 0.085m and there is 0.0156kg solvent. Calculate the moles of solute present in solution
Compute the molarity of the hydroxide ions (OH- )in a solution that has been made by adding 70.3 grams of barium hydroxide (Ba(OH)2) in H2O(water) and diluting the solution to a final volume of four litres.
1 calculate the final temperature of 63 ml of ethanol initially at 11 degc upon absorption of 527 j of heat. density of
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