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Provide a Lewis structure, including resonance if appropriate, and non zero formal charge, for ICl2-
Indicate the pH at (a) the beginning of the titration (0.0 mL titrant) and after the addition of (b) 12.5 mL, (c) 24.0 mL, (d) 24.9 mL, (e) 25.0 mL, (f) 25.1 mL, and (g) 30.0 mL of the titrant. Labe
The mole fraction of O2 in the air is 0.2094, and the mole fraction of N2 is 0.7809. Calculate the density of air at 25 degree celcius and the pressure is 1.00 atm.
A heater burns propane (C3H8) using 30.0% excess air. Combustion is complete. The flue gas leaves at a pressure of 100 kPa and a temperature of 260°C. a. Calculate the flue gas composition
A second 25.0 mL aliquot of the original solution was mixed with 20.0 mL of 50 ppm quinine solution before dilution to 100 mL. The fluorescence intensity of this solution was 425. Calculate the perc
Water, sodium hydroxide, and 1,6-hexanediamine are all potential nucleophiles. Yet, only 1,6-hexanediamine reacts with the adipoyl chloride. Offer an explanation as to why.
A 391 mL of sample of HClO4 has pH of 0.2439. If 619 mL of distilled water was added to the HClO4 solution, what would the new pH be
1. The Vmax determined from a Lineweaver-Burk plot corresponds to what function of the slope and y intercept. 2. The Km determined from a Lineweaver-Burk plot corresponds to what function of the slo
1. In a Lineweaver-Burk plot of 1/v versus 1/[S} what are the units for the slope. 2. In a Lineweaver-Burk plot of 1/v versus 1/[S} what are the units for the y intercept
1. In a plot of absorbance verus time, what are the units for the slope 2. Assuming a pathlength of 1 cm
Why are primary and secondary alcohols relatively easy to oxidize, but tertiary alcohols resist oxidation
How does an increase in pressure effect the solubility of a gas in a liquid? A. As pressure increases, gas solubility increases. B. As pressure increases, gas solubility remains the same. C. As pres
You are about to perform a reaction that requires 1.25 mol of CaCl2 to go to completion. The solution available in the stock room has a concentration of 33 % w/v. How many mL of this solution will y
What is the volume of a 1.25 M NaOH solution required to neutralize a mixture of 50.0 mL vinegar (5.0% m/V acetic acid) and 50.0 mL concentrated acetic acid (95.0% m/V) solution? Acetic Acid: 60.05
A sample of 0.836 gm of unknown compound containing barium ions ( Ba2+) is dissolved in water and treated with an excess of Na2SO4. If the mass of BaSo4 precipitate formed 0.7403 gm, What is the per
How are excess sulfuric acid and the excess methanol removed from the crude ester after the reaction has been completed. Why was 5% NaHCO3 used in the extraction. What would happen if 5% NaOH had be
A 2750 ml sample of 3 M HCl solution is treated with 4.66gm of magnesium. Calculate the concentration of the acid solution after all the metal has reacted. Assume that the volume remain unchanged.
A mixture of lipids is applied to a silica gel column, and the column is then washed with increasingly polar solvents. The mixture consists of phosphatidylserine, phosphatidylethanolamine, phosphati
If a drop of NaOH solution had adhered to the side of the Ehrlenmeyer flask during the standardization of the NaOH solution, how will this error affect the reported MM of the unknown acid( higher or
How would you synthesize 3-isopropyl sulfide cyclopentanol. - using less than a 6 carbon molecule.
Draw the products that correspond to syn addiction of Br2 to trans cinnamic acid and those that correspond to anti addition.
Analysis of an unknown substance showed that it has high boiling point and is brittle. It is an insulator as a solid but conducts electricity when melted, which of the following substances would hav
The accuracy of this experiment depends on good technique. Would the following techinque errors result in an erroneously high or an erroneously low calculated molarity of an NaOH solution
you are making a buffer. you add 57.89g of sodium methanoate to 500.0 ml of water. The molecular mass of sodium methanoate is 68.01 g/mol. The Ka of methanoic acid is 1.8*10^-4. find the pH of the b
Iodine-123 is used to establish thyroid gland function. If after 79.8 hours, 1.56% of the original dose remains in the patitent, what is the half-life