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Calculate the enthalpy of vaporization of Br2. This element has vapor pressures of 271 mm Hg and 565 mm Hg at 30.0 °C and 50.0 °C, respectively.
At 25?°C, the vapor pressure of diethyl ether is higher than the vapor pressure of its isomer n-butanol, because A. diethyl ether has a higher density than n-butanol.
Zinc metal reacts with yellow crystals of sulfur in a fiery reaction to produce a white powder of zinc sulfide. A chemist determines that 65.4 g of zinc reacts with 32.1 g of sulfur. How many grams of zinc sulfide could be produced from 12.0 g of ..
she decomposes the mixture in the exact same manner as the lab, and isolates 154 mL of water at the end. if the water temperature is 24oC and the atmospheric pressure is 742 torr, what was the percent by mass of mercury oxide in the mixture
Calculate the pH of a solution made by adding 42 g of sodium acetate, NaCH3COO, to 16 g of acetic acid, CH3COOH, and dissolving in water to make 300. mL of solution.
You are titrating 110.0 mL of 0.080 M Ca2 with 0.080 M EDTA at pH 9.00. Log Kf for the Ca2 -EDTA complex is 10.65, and the fraction of free EDTA in the Y4- form, ?Y4-, is 0.041 at pH 9.00.
There is a mixture that is soluble only in methylene chloride. I wanna run the column in 10% Ethyl acetate/hexanes. Which method of column loading should I use in this case and why?
A copper tube is 1 inch in diameter and 2 feet long, it is filled with steel balls of 1 inch diameter. The space between the balls is filled with water. the specific gravity of the steel b all is 7.8. What is the bulk denisty of the contents of th..
A coffee cup calorimeter is being used in this lab despite the fact that one of the reactions produces gas. Calculate the work done using the information
A serum sample of a concentration of 23.0 ppm. How many mL of 0.010M EDTA solution would be added to 100 mL of serum sample to get to a final
The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron.
A power company burns approximately 474 tons of coal per day to produce electricity. If the sulfur content of the coal is 1.30% by weight.
How many milliliters of the potassium permanganate solution will be required to react completely with the potassium iodide solution if the reaction is carried out in acidic solution and in basic solution?
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