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Explain the following observations. 1. Aziridines, compounds that contain nitrogen in a three-membered ring, undergo pyramidal inversion much more slowly than do other alkylamines. 2. The rate constant for formation of tetraethylammonium iodide form triethylamine and ethyl iodide is more than 800 times greater (at 100 degrees celsius) when the solvent is acetone than when it is hexane. The respective dielectric constrants are 21 for acetone and 1.9 for hexane.
The heat of neutralization of HCl by NaOH is H°rxn = -56.2 kJ/mol. How much heat is released when 125 mL of 1.750 M HCl is mixed with 195 mL of 0.667 M NaOH.
NaOH + CO2 -> Na2CO3 + H2O. If the average human body discharges 745 g of CO2 per day, how much NaOH is needed each day for each person in the spacecraft.
What are the n and l quantum numbers of the electron removed when Bi is ionized to Bi+ and would you expect element 115 to have ionization energy greater than, equal to, or less than that of bismuth? Explain.
An aqueous solution is 22.0% by mass silver nitrate, AgNO3, and has a density of 1.22 g/mL. What is the molarity of silver nitrate in the solution?
Determine how many grams of aluminum hydroxide will get from 18.2g of aluminum sulfide and determine the density of this newly minted penny
would a given amount of flourine react with different masses of the two hydrogen isotopes? Does this violate the law of definite proportions.
How much heat is required to heat 10.0g of ice at -5.00 degree Celsius to become water vapor at 107.00 degree Celsius.
A 771 mL gas sample at STP is compressed to a volume of 242 mL, and the temperature is increased to 31?C. What is the new pressure of the gas in Pa
A certain pesticide is fatal to fish fingerlings at a level of 0.5 parts per million in water. A leaking metal can containing 10.0 kg of the pesticide was dumped into a stream with a flow of 10.0 Liters per second moving at 0.7 km/hr.
Calculate the final temperature of 34mL of ethanol initially at 20celcuis upon absorption of 739 J of heat. (density of ethanol =0.789g/mL )
Acetylene gas (C2H2) used in welding, produces an extremely hot ?ame when it burns in pure oxygen according to the reaction 2 C2H2(g)+5 O2(g) -→ 4 CO2(g)+2 H2O(g)
Assume that a waste contains 395.0 mg/L of biodegradable CH2O and is processed through a 190000.0 L/day sewage treatment plant which converts 40% of the waste to CO2 and H2O.
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