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A strong acid is generally used to catalyze the Fischer esterification of carboxylic acids. What two steps in the reaction are accelerated by the presence of strong acid, and what function does the acid play in each of these steps?
plot the temperature distribution in all relevant dimensions for each side of the aluminum cylinder as a function of position for 5 different time intervals, ranging between (and explicitely including t=0 and t= infinity
Cesium ions are added to flood the flame with electrons. It needs to be in a large concentration, larger than what is being measured.
What is the value of the frequency factor A for this reaction? What is the rate constant for the reaction at 350 degrees celcius?
Draw the Lewis structure of the major resonance form of the thiosulfate ion, S2O3 2-. Include all lone pairs of electrons. Include formal charges on atoms with charges.
A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
Compute the changes in the degree of polymerisation and the rate of the polymerisation caused by raising the temperature of polymerisation of styrene in C6H6, initiated by azobisisobutyronitrile from 60 0C to 70 0C.
Write contributing (important) resonance structures for each of the following compounds and predict their relative C=O vibrational frequencies based on the importance of the contributing resonance structures. List in them order from highest to low..
bathed by an atmosphere of nitrogen at 77K and 1 bar? Assume every nitrogen molecule that strikes the surface sticks and that a nitrogen molecule covers an area of 1.1e^5 pm^2.
A 2.721 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution.
Calculate the pH of a solution that is 1.00 M HNO2 and 1.00 M NANO2
if you have 330 ml of water at 25.00 and add 120ml of water at 95 C what is the final temperature of the mixture
If 25.00 mL of 0.687 M Fe(NO3)2 are added to a flask containing 0.289 g of aluminum metal, what compounds will be present in the flask once the reaction is complete? (Ignore water, etc.)
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