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The electrolysis of molten A12O3 at 980 ºC is used to produce metallic aluminum. A current of 658 A is used in the electrolysis cell. What is the rate of formation of aluminum, in kilograms per hour? Answer is 0.221 kg/hr For the above current at 3.21 V, how much electrical energy (in kw-hr) is consumed in the production of 1 kg of aluminum? (A kW-hr is 3.6 x106 J.)
The density of titanium metal is 4.51 g/cm^3 at 25 degrees C. What mass of titanium displaces 64.0 mL of water at 25 degrees C?
Menthol, the substance we can smell in mentholated cough drops, is composed of C, H, and O. A 0.1307?mg sample of menthol is combusted, producing 0.3678mg of CO2 and 0.1507mg of H2O.
At a certain temperature, the Kp for the decomposition of H2S is 0.726 H2S = H2+S initally only H2S is present at a pressure of 0.126 atm in a closed container.
In what approximate lcoation on a IR Spectrum would you expect to see one or two absorptions that distinguish 1-propanol
You want to prepare a pH=4.50 buffer using sodium acetate and glacial acetic acid. You have on hand 300 mL of 0.100 M sodium acetate. How many grams of glacial (water free) acetic acid should you add to prepare the buffer
How many moles of oxygen gas are required to completely react with 6.20 moles of carbon according to the balanced reaction equation shown below?
Using a sample of 0.385 g of Alka-Seltzer, the mass of Carbon dioxide is found to be 0.122 gram. Compute and enter response (in numerical value only) to three significant figures.
the temperature remains constant, and the pressure on the oxygen is decreased to one third the original pressure, what is the new volume
what is the experimental value of Avogadro's number. dropper pipet calibration= 68 drops/ml number of drops of oleic acid in the monolayer=16 drops diameter of monolayer = 15.0 cm
A 0.12M solution of a weak acid HA has pH = 2.49. What is the Ka of this acid.
Use a temp-composition diagram to explain why fractional distallation of 2 components is more easily accomplished if the components have boiling points
Manufacturing overhead equal $5, $2, and $3respectively. Calculate the amount of material cost, labor cost, andoverhead cost in the beginning Work in Process.
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