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Explain what is the percent yield of C2H5Cl(g) if 2.00 moles of C2H4(g) react with excess hydrogen chloride gas to produce 1.50 moles of C2H5Cl(g)? C2H4(g) + HCl(g) ----> C2H5Cl(g)
A system at equilibrium contains I2 (g) at a pressure of 0.41 atm and I (g) at a pressure of 0.32 atm. The system is then compressed to half its volume.
A 32.65-g sample of a solid is placed in a flask. Liquid toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 50.00 ml.
The reaction of nickel with concentrated nitric acid, the products are nickel III nitrate, water and nitrogen monoxide, sometimes called nitric oxide. If 250 ml of nitric oxide were collected over mercury at 42C and under a pressure of 745 mm of m..
Clausthalite is a mineral composed of lead selenide (PbSe). The mineral adopts a NaCl-type structure. The density of PbSe at 25C is 8.27g/cm^3. Calculate the length of an edge of the PbSe unit cell in Angstroms.
Explain how mass effects act to lower the carbonyl frequency, as well as how inductive and hyperconjugation effects act to raise the carbonyl
The heat of vaporization of a substance is 2800 J/g at its boiling point of 219 degree C. How much of this substance can be vaporized if 62800 J energy are available?
mass of solvent134.4 gmolthe same mass of solute is dissolved in 9.82 g of t-butanol instead of cyclohexane. what is
There is an alternative procedure that uses K2CO3 instead of NaOEt; why can NaOEt or K2CO3 be used for the phenacetin synthesis
Thomas Jefferson Snodgrass found an unlabelled reagent bottle in his -80 C freezer. The Bottle contained a liquid. He found that the compound( compound 1) quickly evaporated when warmed to room temperature. H-NMR of the compound showed only two pe..
The number density of atoms (mostly hydrogen) in interstellar space is about 10 per cm3, and the temperature is about 100K. a. Calculate the pressure of the gas in interstellar space, and express it in atmospheres.
Which salts are more effective for cold and hot packs, KNO3, NH4NO3, MgSO4, CaCl2, MgCl2? which are most cost effective? Maximum and minimum T for both?
All of the following reaction conditions would generally increase the rate of a chemical reaction, EXCEPT: A) changing the reactants from a liquid state to a gas state B) increasing the temperature of the reaction
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