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Compute the heat of vaporization of methanol using the normal boiling point of 64.6 'C. Explain the vapor pressure of methanol at 25.0 'C is 0.188 atm.
The osmotic pressure of the solution is 1.21 atm at 27 °C. What is the molar mass of the solute?
Calculate the dye concentration. (3) 5.00 mL of 0.00500 M ferric nitrate is added to 5.00 mL of nitric acid and 10.0 mL of 0.00250 M thiocyanate solution. Calculate the initial Fe3+ concentration before reaction.
An aqueous solution of ethanol, C2H5OH, is 19.00% ethanol by mass and has a density of 0.9700 g mL-1. Calculate the molarity of the ethanol solution.
Within the Bohr model of the hydrogen atom, the radius of the orbit for the ground state was 5.292 x 10-11 m. Using de Broglie's idea that the circumference of this orbit had to equal the wavelength of the electron
What is the boiling point of a solution of benzene containing 0.2 moles of a non volatile solute in 125 grams of benzene given that pure bezene has a boiling point of 80.1
Give the hybridization of the indicated atom in the following: (first draw the Lewis structure for each) a. Carbon in OCCl2
Determine the theoretical and percent yield of your product. In the IR spectrum of phenacetin which peaks are due to the following vibrations: (list the wavenumbers)
Heat transfers to a 1.5 kg block of ice at -10 Celsius and melts it to a liquid at +10 Celsius in a kitchen. How much work does the water give out
A solution is to be prepared with a sodium ion concentration of 0.33 mol/L. Explain what mass of sodium sulfate (g) is needed to prepare 1.22 liters of such a solution
A 486 mL sample of water was cooled from 50.0°C to 10.0°C. Assuming a specific heat of 4.184 J/K g and a density of 1.00 g/mL, find the amount of heat transferred from the water to the surroundings.
Write a semi-quantitative expression which describes the lattice energy of an ionic crystal. Define and explain all terms used, and explain how they may effect the properties of the crystal.
A blight has wiped out the pineapple crop. You are asked to synthesize the ester that is responsible for the scent of pineapple, butyl butanoate. Draw the skeletal structure of the reagents needed to make this scent.
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