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At a particular temperature the equilibrium constant for the reaction: H2(g) + F2(g) ? 2HF(g) is K = 36.0. A reaction mixture in a 10.00-L flask contains 0.42 moles each of hydrogen and fluorine gases plus 0.15 moles of HF. What will be the concentration of H2 when this mixture reaches equilibrium?
Which has the highest vapor pressure?
Given that the specific heat capacities of ice and steam are 2.06 j/g degrees C and 2.03J/g degrees C, respectively, calculate the total quantity of heat evolved when 10.0 g of steam at 200 degrees C is condensed, cooled, ad frozen to ice at -50 d..
Write balanced nuclear equations for (a.) the loss of an alpha particle by thorium- 230 and (b.) the fission of U- 235 to give Ba- 140, two neutrons, and another nucleus.
(1.) Determine the pH of this buffer. (2.) Some solid sodium hydroxide is added to this buffer system and the new pH is measured as 4.74. How many grams of NaOH were added? (Assume the total volume remains unchanged)
The density of an unknown metal is 8.94 g/cm^3 and its atomic radius is 0.126 nm. It has a face-centered cubic lattice. Find the atomic weight of this metal.?
a compound gives a mass spectrum with peaks at mz 77 40 112 100 114 33 and essentially no other peaks. identify the
Find the equation for the work of a reversible, isothermal compression of 1 mol of gas in a piston/ cylinder assembly if the molar volume of the gas is given
Calculate the pH of a solution containing an amphetamine concentration of 200 mg/L. Express your answer to one decimal place.
In 1934, Edward A. Doisy of Washington Univeristy extracted 1361 kg og hog ovaries to isolate a few milligrams of a potent female hormone. Doisy burned 5.00 mg of this precious sample in oxygen and found that 14.54 mg of CO2 and 3.97 mg of H2O wer..
Adipic acid with two molecules of ethylamine, Write an equation for the formation of the salt that could be formed by reaction of one molecule of adipic acid
A 10 g sample of acetic acid, HC2H3O2 was burned in a bomb calorimeter in an excess of oxygen. The temperature of the calorimeter rose from 25 degree C to 35.84 degree C
What is the rate constant (with units) if the rate of reaction is 1.23Ms- and the concentration of the Ru cluster is .050 M and the azide concentration is .025 M?
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