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Explain why is it important to add the solution of bromine quickly as well as in one portion to the test tube containing the aromatic substrate?
Potassium hydroxide is used to precipitate each of the cations from their respective solution. Determine the minimum concentration of KOH required for precipitation to begin in each case
the enthalpy change for melting ice at 0degc and constant atmospheric pressure is 6.01 kjmol. calculate the quantity of
Multiple choice questions in nuclear chemistry - which equation represents the balanced nuclear equation
That a supercooled gas eventually phase separates is consistent with the 2nd Law of Thermodynamics because the phase separation lowers the Helmholtz free energy of the system
What is n in the Born expression for the non coulomb repulsion energy. What are typical values for n
Find the equilibrium concentrations of A and B for a=1 and b=1. Assume that the initial concentration of is a= 1.0 and that no b is present at the beginning of the reaction.
What mass of solid potassium nitrite would need to be dissolved in 500. mL of 0.40 M HNO2 to make 500. mL of a NO2?/HNO2 buffer solution that has a pH = 3.25? Ka of HNO2 = 7.1 x 10?4
The valve between a 5-L tank containing a gas at 9 atm and a 10-L tank containing a gas at 6 atm is opened. Calculate the final pressure.
Determine how many liters of O 2 gas should be mixed at constant temperature and pressure?
the depth of each tank is 2 m and each has a detention time of 4 h. what is the surface area of each tank and what is the overflow rate of each tank in m^3/d*m^2?
to obtain the same antifreeze protection requires 76 of propylene glycol to replace each 62 of ethylene glycol.
Consider the crystalization of sulfanilamide from 95% ethyl alcohol. If impure sulfanilamide is dissolved in the minimum amount of 95% ethyl alcohol at 40 degrees celcius rather than 78 degrees celcius
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