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Draw a mechanism to demonstrate how pyridine catalyzes the hydrolysis of acetic anhydride to two molecule of acetic acid. Is this reaction reversible? why or why not?
Show all non-bonding electrons on each atom, circle positive charges, circle a nonbonding electron pair if the atom is negatively charged and indicate electron pain movement with double headed arrows.
A solution is 0.034M in Na2SO4 and 0.035M in Na2CrO4. Solid Pb(NO3)2 is added without changing the volume of the solution.
determined the percent Co by converting your product into a blue-violet colored Co complex and measuring the absorbance in the Spec 20 instrument. What is the formula of this blue-violet complex?
Thermodynamic Processes. a volume of 20 cu ft of air at pressure of 50 psig is heated and expanded to 30 cu ft and 40psig find the change in the energy of air in joules.
Calculate the pH of a buffer made from mixing 10.0 mL of 0.100M NaC2H3O2 and 10.0 mL of 0.100M Hc2H3O2. a) Calculate the pH of the buffer when 5.00 mL of a 0.0100M HaOH is added.
The running engine of an automobile preoduces carbon monoxide Co, a toxic gas at the rate is of about 0.117 mol CO per minute. A car is left idling in a poorly ventilated garage that is 6.0m long 4.0m wide and 2.2 m hight and 20.0 C.
Which corresponds to approximately 2.65 * 104 mol of electrons at the voltage of a fuel cell and calculate how much heat energy is absorbed?
What is the PH of a 0.085M solution of ammoniun chloride. Kb for ammonia is 1.8 times, Calculate the pH fo a solution made by mixing 125ml of .200M HCl and 500 ml fo 0.0500M KOH
What concentrations of [K2HPO4] and [KH2PO4] will you need to make the total concentration 0.50 M? 3.) How many moles of K2HPO4 and KH2PO4 will you need? 4.) What mass of K2HPO4 and KH2PO4 will you need?
What actions should an exposed person take during the immediate aftermath of the explosion?
The temperature of the mixture is 0 \rm ^{\circ}C , and the total pressure is 1.00 \rm atm . How many grams of helium are present in the gas mixture?
How many grams of methanol must be added to 7.50kg of water to lower its freezing point to -15.0^circ C? For each mole of solute, the freezing point of 1 {rm kg} of water is lowered 1.86 ^circ {rm C}
Using a sample of 0.385 g of Alka-Seltzer, the mass of Carbon dioxide is found to be 0.122 gram. Compute and enter response (in numerical value only) to three significant figures.
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