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In a certain reaction it was noticed that the reaction rate coefficient k depends upon temperature by an Arrhenius relationship. If k = 2 x 10^-5 L/mol-sec at 25 degrees C and k = 2 x 10^-4 L/mol -sec at 100 degrees C, determine the activation energy Ea in Joules/mol.
How long would it take to electroplate a metal surface with 0.500 g nickel metal from a solution of Ni 2+ with a current of 4.0 A?
f gas reacts with nh3 gas to produce n2f4 tetrafluorohydrazine or dinitrogen tetrafluoridenbspand hfhydrogen fluoride.
On size-exclusion chromatogram you have three peaks (2.9, 3.5, and 4.8 min). Column dead volume is 12 mL, and flow rate 4 ml/min. Are your separation conditions fit for size-exclusion requirements? Explain why.
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
A room temperature aqueous solution is 0.10 M in zinc acetate, 0.50 M in strontium acetate and 15.2 M in nickel (II) acetate. At what concentration of carbonate does a solid first appear in the solution?
assume no cooling of the metal during transfer. When thermal equilibrium is attained, the temperature of wate-plus-metal has risen to 28.8*C
A 14 mL sample of a solution of AlBr3 was diluted with water to 56 mL. A 25 mL sample of the dilute solution was found to contain 2.31 M Br-. What was the concentration of AlBr3 in the original undiluted solution
A bag of potato chips contains 595 mL of air at 30.0 degrees celcius and a pressure of 770 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 438 mL and the temperature is 8.00 celcius?
What is the final concentration of Na+ if 250 ml of 0.3 M Na Cl is added to 750 ml of 0.125 M Na2SO4?
Draw the structure of the potential product if an elimination reaction takes place instead of substitution. NaBr + H2SO4 ---> HBr + NaHSO
A 1.3 mL volume of seawater contains about 4.0 X 10^-10 g of gold. The total volume of ocean water is about 1.5 X 10^21 L. Calculate the total worth of all of the gold in the world's oceans if the price of gold is $18.00 per gram.
Use Le Chatelier's principle to explain the different colors found in the equilibra in Methyl orange
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