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An unknown carbonyl compound tested positive when mixed with chromic acid solution. It also showed positive results in the iodoform test. Draw the structure of this compund
Copper metal is purified by electrolysis. How much copper metal could be produced from copper(II) oxide by applying a current of 10.0 amps at the appropriate negative potential for 12.0 hours
It takes 580. J of energy to raise the temperature of 124.5 g mercury from 20.0°C to 53.5°C. Calculate the specific heat capacity and the molar heat capacity of mercury.
At what wavelength do you measure the change in absorbance to assay for enzyme X? Does the absorbance increase or decrease over time?
When distilling a pure compound, the boiling temperature remains constant although you are heating the flask. Why?
a mixture of Phe (pI 5.5), Thr (pI 6.5), Asp (pI 3.0), His (pI 7.6), and Lys (pI 9.8) at pH 9.8 is loaded on an anion-exchange column and then eluted with a pH gradient of lowering pH. what order will the aminoo acids elute? Explain.
How many minutes will it take to electroplate 26.1 g of gold by running 5.00 A of current through a solution of Au+ (aq)
Explain why butyl alcohol and isopropyl iodide are not formed in the reaction. Write a suitable mechanism for the cleavage of butyl isopropyl ether with HI at 100 degrees C to form exclusively isopropyl alcohol and 1- iodobutane.
The standard free energy of formation of nitric oxide, NO at 1000K is 78kJ/mol, calculate the equilibrium constant for this reaction at 1000K, N2(g) + O2(g) 2NO(g)
How many moles of silver metal are produced in 1.2 hours by the electrolysis of AgNO3(aq) using a current of 6.0 A
reacting 5g of salycic acid with an excess of acetic anhydride
Butane lighters work very poorly outdoors in the cold weather. If 12.7 mL of butane gas is released from a lighter at 22 degrees celcius, what volume would the same amount of butane occupy at 11 degrees celcius?
Write out the chemical equation and the equilibrium constant expression based on the concentration.
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