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1) Compound that are not stable at PH 0 may be stable under less harsh conditions
a) Show that the species Co^3+ (aq) will spontaneously decompose to CoO2 (s) and Co^2+ (aq) at PH 0 the question need to solve for the potential at both pH of 0 and pH of 5 to prove that at pH of 0 the cobalt will decompose spontaneously, but at pH of 5 it will not.
5.00g of Mg was reacted completely with Cl2 to form MgCl2 and 63.0kJ of heat was evolved. what is the molar enthalpy of formation of MgCl2?
The black silver sulfide discoloration of silverware can easily be removed by heating the silver article in a sodium carbonate solution in an aluminum pan.
If the initial concentration of cyclopropane is 0.150 M, what will the concentration of cyclopropane be after 22.0 hours? b) What is the half-life for the conversion process?
What is the specific heat for the metal if It takes 48.0J to raise the temperature of an 8.60g piece of unknown metal from 13. Degree Celsius to 24.3 degree celsius?
An average adult inhales a volume of 0.50 l of air with each breath. if the air is warmed from room temperature (20c) to body temperature (37c) while in the lungs.
The volume of each glass was 250mL. How much heat, in kJ, did the body have to supply to raise the temperature of the water to body temperature (37 C)?
A metal object with a mass of 19g is heated to 96c, then transferred to a calorimeter containing 75g of water at 18c. The water and teh metal object reach a final temperature of 22c.
what species( ions/molecules)are present at the halfway point in the titration tword the stoichometric point in a.
A 50.0 mL sample of 0.40 M benzoic acid, C6H5COOH, a weak monoprotic acid, is titrated with 0.48 M NaOH. Calculate the pH at the equivalence point. Ka of C6H5COOH = 6.5 10-5
10M NaF solution is slowly added with stirring, to a solution that contains 10M Ca(NO3)2 and 10M Cr(NO3)3 .Which salt CaF2 - or - CrF3 precipitates first? The Ksp for CaF2 = 5.3x10^-9 & Ksp for CrF3 = 6.6x10^-11
Octane has a density of .692 g/ml at 20 degrees Celsius. how many grams of O2 are required to burn 1.00 gal of C8H18.
How many electrons are transferred in the following oxidation-reduction reaction?
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