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The Phosgene COCl2 is chemical warfare gas commonly called mustard gas. It decomposes as written below. At 900 C, the Kc = .83. Presume 400 mol of COCl2 are admitted into a2.00 L container at 900 C. Explain what will the equilibrium concentrations of CO, CL2 and COCl2? Use the quadratic for this one.COCl2 <=======> CO + Cl2
What is the volume of 455 mL of oxygen gas at 67.0°C and 300. mm Hg if the conditions are adjusted to 890. mm Hg and 107°C? Assume the amount of gas is held constant.
A student measures k for a certain blue dye to be 24.16 M^-1 at 560 nm. What is the molarity of the dye in a solution with an absorbance of 0.118 at 560 nm
Explain how the Law of Combining Volumes, combined with the atomic-molecular theory, leads directly to Avogadro's hypothesis that equal volumes of gas at equal temperatures and pressure contain equal numbers of particles.
An 18-karat gold necklace is 75% gold by mass, 16% silver, and 9.0% copper. How many grams of copper are in the necklace? If 18-karat gold has a density of 15.5
indicate whether the signs of H and S are expected to be positive, negative or about 0. For each, indicate whether the process is always spontaneous, never spontaneous, spontaneous at high temperature or spontaneous at low temperature.
The rate law for a hypothetical reaction is rate=k[a]2. when the concentration is .10 moles/liter, the rate is 2.7 times 10-5 moles/liter second. what is the value of k?
Copper has two naturally occurring isotopes,63Cu (isotopic mass 62.9396 amu) and 65Cu (isotopic mass 64.9278 amu). If copper has an atomic mass of 63.546 amu, what is the percent abundance of each isotope
how would you make 100ml of a buffer with a pH =4.25, starting with 0.25 M acetic acid and 0.25M sodium acetate
The activity coefficients for acetic acid and the acetate ion are 1.000 and 0.775, respectively, in a solution with an ionic strength of 0.10 M.
Complete the following equations in molecular form. The reactant coefficients are correct. Indicate precipitation, redox, or acid – base. Write the equations in NET ionic form (no spectator s). Balance charges and use the correct suffixes.
describe the major absorption bands in the ir spectrum.1.on the ir spectrum of your product label all the major
an element crystallizes in a body-centered cubic lattice. the edge of the unit cell is 2.69 and the density of the
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