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Describe the role of the fractioning column in fractional distillation in detail. What is it made of and what does it do? How/why does this allow for a better liquid/liquid separation than a standard simple distillation?
A reaction yields a colored product and the absorbance at a given wavelength increases at 0.2 per minute. The molar absorbtivity of the product is 4.0 ?M-1cm-1. What is the rate of product formation. Use correct units.
How many moles of H3O+ must be added to 482 mL of a solution to adjust the pH from 8.80 to 5.56? Use E notation and 3 significant figures.
What is the pH of a solution that is 0.10 M CH3NH2 (methylamine) and 0.15 M methylammonium chloride
I2(g) + Br2(g) is at equilibrium with 2IBr(g), Kc=8.7x10^2 at 150 degrees celcius. Suppose that 0.84 mol of I2 and 0.84 mol of Br2 are placed in a 3.000 liter flask and allowed to reach equilibrium at 150 degrees celcius. What are the equilibrium ..
Find out the electron geometry (eg) as well as molecular geometry (mg) of the underlined carbon in CH3CN.
What should you observe happening to the gas produced: A) If the concentration of the acid HCl is increased? B) If the solid calcium carbonate is in powder form
During the course of an experiment, 10.0 mL of water is added to 25.0 mL of aqueous 0.120 M NaCl. What is the concentration of NaCl in the resulting solution
Specified the Ka1 and Ka2 for carbonic acid are (4.45*10-7) and 4.69*10-11, respectively find out the alpha value for HCO3- at ph 5
Problem- Based on analysis of the spectra, a molecule with the formula C9H10O3 has been determined to contain the following- A para-substituted benzene ring,
What possible enzyme activities would be most helpful in devising a method for prenantal diagnosis of I-cell disease?
In its 2012 Annual Report, McDonald's made the following statement: "In 2012, foreign currency translation had a negative impact on [reported revenue and profits] primarily due to the weaker Euro, along with most other currencies." What does the a..
Problem- When 1318 J of heat energy is added to 40.4 g of ethanol, C2H6O, the temperature increases by 13.3 °C. Calculate the molar heat capacity of C2H6O.
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