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After 61.0min, 19.0% of a compound has decomposed. Explain what is the half-life of this reaction assuming first-order kinetics?
Calculate the difference in energy between the second and first levels and between the fourth and third level (i.e. find Delta E = En Upper - En Lower for n upper=2, n lower =1 and for n upper = 4, n lower =3)
the solubility of mgoh2 s in wataer at a certain temperature is 1.0 x 10-4 moll. calculate the value of ksp for mgoh2 s
By plotting these data in a suitable fashion, determine whether the Clausium-Clapeyron equation is accurate. If so, use your plot to determine ΔHvap for C6F6.
Diphosphorus pentoxide is added to water Hydrogen sulfide gas is bubbled through a solution of silver nitrate
Coniine, a toxic substance is isolated from poison hemlock contains only carbon, hydrogen, and nitrogen combustion analysis of a5.024mg sample yields 13.90 mg of CO2 and 6.048 mg of H2O. What is the empirical formula of coniine
Dissolving 3g of an impure sample of CaCO3 in HCl produces .656 L of CO2, measured at 293 K and 1.04 atm. What is the percent by mass of the CaCO3 in the sample?
There are 18 constitutional isomers with molecular formula C8H18. Without drawing all 18 isomers, determine how many of the isomers will have a parent name of heptane.
Explain the preparation of phenylmagnesium bromide from bromobenzene and magnesium metal is an instance of an oxidation-reduction reaction. Explain what is oxidized and what is reduced
an aqueous cacl2 solution has a vapor pressure of 82.1 mmhg at 50 c . the vapor pressure of pure water at this
When 24 copper pennies are submerged in water, the pennies displace 8.26 cm3 of water. If the combined mass of the pennies is 73.86 g, what is the density of copper?
The unit cell for tin has tetragonal symmetry, with a and b lattice parameters of 0.583 and 0.318 nm, respectively. If its density, atomic weight, and atomic radius are 7.30 g/cm3, 118.69 g/mol, and 0.151 nm, respectively, compute the atomic packi..
What is the pH of the solution after 50.0 mL of base has been added? What is the pH of the solution at the equivalence point
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