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Calculate the pH of a solution that us 0.195M in methyl amine and 0.105M of methylammonium bromide. The Ka of methyl ammonium bromide is 2.3e-11 and the Kb for methyl amine is 4.4e-4.
calculate the theoretical yield of c2h5cl when 140 g of c2h6 reacts with 234 g of cl2, assuming that c2h6 and cl2 react only to form c2h5cl and hcl.
Calculate the millimoles of copper (II) sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.
nanowires are high aspect ratio metal or semiconducting wires with diameters on the order of 1-100 nanometers and
how does direct current break apart water molecule? Does the DC current fill the outer shell full of electrons making a weaker attraction so hydrogen seperates from oxygen?
The ammonia gas is produced by reacting hydrogen gas with nitrogen gas. To produce 450 g of ammonia gas utilizing air as your source of nitrogen gas, explain what volume of air is needed if the air is introduced at 25°C as well as 740 mmHg
Electrons are ejected from sodium metal by any light that has a wavelength shorter than 544 nm. What is the kinetic energy of an electron
Trichloroethane has a vapor pressure of 100.0 mm Hg at 20.0 C and boils at 74.1 C. An uncovered cup (1/2 pint) of trichloroethane (d=1.325 g/mL) is kept in an 18-ft3 refrigerator at 39 F. What percentage (by mass) of trichloroethane is left as a l..
Propose a structure for the hydrocarbon that gives the following products on oxidative cleavage by KMnO4 or ozone.
A sealed chamber contains 5.80 g CH4 and 14.9 g O2 the mixture is ignited. Explain how many grams of Co2 are produced
Calculate the maximum mass of pure ethanol that can be vaporized in 10 min from a beaker left in strong sunshine, assuming that the surface area of the ethanol to be 50 cm^2.
Calculate the standard free energy change and the equilibrium constant for the following reaction at 25°C: (all aqueous solutions are 1 M) Au(s) + Ca2+ (aq) ? Au3+(aq) + Ca(s)
Water vapor will react reversibly with methane (CH4) to produce carbon monoxide and hydrogen gas. The equilibrium, with a Kc = 0.26, is established at 9270C in a 0.32L flask which contains 0.26mol CO, 0.091mol H2, and 0.041mol CH4. What is the con..
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