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What is the of a buffer system that contains 0.210 hydrocyanic acid and 0.240 sodium cyanide ? The of hydrocyanic acid is 9.31.
A crude product weighing 2.0g contains 0.4g of impurities and is therefore 80% pure. The crude product is recrystallized from 100ml of hot water
Explain why cis dichloroethene has a boiling point of 60 degrees C while trans - dichloroethen has a boiling point of 48 degrees C.
The formal charge on the P atom is zero and It is best described with three resonance structures.
Which of the following acid-base pairs would work best for a laboratory experiment requiring a pH of 6.8? What molar ratios of the compounds would you use to prepare the solution?
How many moles of AlCl3 can be produced by letting 918 grams of HCl react?
If a person were to say that a scientific finding was replicated, he or she would be saying that the finding was
Calculate the theoretical yield of C2H5Cl when 138 g of C2H6 reacts with 244 g of Cl2, assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
Calculate the change in Gibbs free energy for each of the following sets of ΔH ° rxn , ΔS ° rxn , and T .
A buffer is prepared by adding 1.50X 10^2 ml of 0.250 M NaOH to 2.50X10^2 ml of 0.350 M weak acid, HB. The solution is diluted to 1.00 L. If the pH of the resulting solution is 6.55, what is the pKa of the weak acid
Benzene is a trace component of gasloine. What is the mole ratio of benzene to n-octant in the vapor above a solution of 40.0% benzene and 60.0% n-octane by the mass
More gas is then added to the container until it reaches a final volume of 13.9 L. Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.
At what position will the electrophilic aromatic substitution occur for the following compounds? bromobenzene, nitrobenzene, benzoic acid, toluene, phenol, and benzaldehyde
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