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A mixture of 13.1 grams of Zn and 22.0 g I2 is reacted to completion in a closed, evacuated container. What are the contents of the contianer after this reaction?
a strong acid is generally used to catalyze the fischer esterification of carboxylic acids. what two steps in the
What is the pressure in a 15.6L cylinder filled with 45.5g of oxygen gas at a temperature of 310K
Solution is prepared by mixing 0.025 l of 3e-3 m BaCl2 and 0.025l of 2e-3 m of na2co3. Ksp= 2.6e-9 for baco3. Write balanced equation with correct state
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. Write the balanced overall cell ..
NH3 and NH4+ are used to create a buffer solution. When a base is introduced into this buffer, which of NH3 and NH4+ reacts with the base to maintain the pH of the solution
Draw orbital-filling diagrams for atoms with the following atomic numbers. Show each electron as an up or down arrow, and use the abbreviation of the preceding noble gas to represent inner-shell electrons
Which alkyl bromide reacts fastest with methanol. options: 2-Bromo-2-methylbutane 2-Bromopentane 1-Bromopentane 2,2-Dimethyl-1-bromopropane
Water soluble proteins do not contain amino acids with hydrocarbon R-groups. The hydrocarbon chains on these amino acid R-groups aren't long enough to make them not soluble in water.
Calculate the number-average molecular weight of a random nitrile rubber [poly(acrylonitrile-butadiene) copolymer] in which the fraction of butadiene repeat units is 0.30; assume that this concentration corresponds to a degree of polymerization of..
Solution A is twice as concentrated as solution B but has a smaller absorbance value. Both solutions abosrb maximally at wavelength =585 nm. Give a through explanation for this observation.
What is the pH of solution at the second equivalence point? The acid dissociation constants for carbonic acid are pK1=6.35, pK2=10.33
calculate the molar change in chemical potential of an ideal gas that expands 10 times of its original vol. at 100k
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