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What is the pH at the equivalence point in the titration of a 19.2 mL sample of a 0.388 M aqueous nitrous acid solution with a 0.490 M aqueous sodium hydroxide solution?
pH =
in a calorimeter 50.0 ml of 60 deg celcius water is added to50 ml of 14.0 deg celcius water. if the maximum
An oligomeric protein has a molecular weight of 168000. A 420 mg sample was treated with an excess of 1-fluoro-2,4-dinitrobenzene (Sanger\'s reagent) until the reaction was complete
At a certain temperature a reaction that follow first order kinetics has a rate constant of to be equal to 2.5*10^-3 s^-1 the time in seconds required for the reaction to be 60% complete is
Menthol, the organic substance in the pills can smell menthol cough drops, consisting of carbon, hydrogen and oxygen. A sample of 100.1 mg menthol burns in oxygen, yielding 282.9 mg of carbon dioxide and water 115.9mg.
A 45.0-rm mL sample of this glucose solution was diluted to 0.500 rm L. How many grams of glucose are in 100. rm mL of the final solution?
A chemist at a pharmaceutical company is measuring equilibrium constants for reactions in which drug candidate molecules bind to a protein involved in cancer.
an automobile fuel tank is filled to the brim with 56.0 liters 14.9 gallon of gasoline at 11.5 deg c. immediately
For the reaction , 2Cr2 + Cl2(g)--> 2Cr3 +2Cl, Ecell is 1.78 V. Calculate E cell for the related reaction Cr3 + Cl--> Cr2 +1/2 Cl2(g)
What is the molarity of sodium chloride in solution that is 13% by mass sodium chloride and that has a density of 1.10g/mL
State whether the sign of the entropy change of the following processes will be positive or negative. a. PCl3 (l) + Cl2 (g) -> PCl5 (s)
Find the standard cell potential for the galvanic cell ( Al | Al3+ || Ni2+ | Ni ) if both solutions have 1.00 M concentrations. Recall the standard cell potential calculated as E0cell = E0 (reduced species) - E0 (oxidized species) does not depend ..
(a) How long does it take to grow 800 nm thick oxide layer in a dry oxidation environment at 800 C. (b) What happens if we increase the temperature to 1200 C
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