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An effusion cell has a circular hole of diameter 2.50 mm. If the molar mass of the solid in the cell is 260 g mol-1 and its vapour pressure is 0.835 Pa at 400 K, by how much will the mass of the solid decrease in a period of 2.00 h?
Analytical molar concentrations of HA species 2) Equilibrium molar concentrations of HA species. Trichloroacetic acid (HA) is 73% ionized in water
How many grams of chromium would be electroplated by passing a constant current of 5.2 amperes through a solution containing chromium(III) sulfate for 45.0 minutes.
If 27.0 mL of 0.0200 M KMnO4 were required to titrate a 0.425 g sample of K3[Fe(C2O4)3] * 3H2O, what is the % purity of the complex
Descibe at least four possible factors which may influence the amount of light absorbed by a solution and how these factors may affect the absorption
A certain solvent has a normal freezing point of 1.72 ° C, and a freezing point depression constant of 5.07 ° C/m. What is the molality of a solution in
Predict the reactivity, state at room temperature and relative sizes of the following elements: (make a chart organize your information) Barium, Potassium, Chlorine, Oxygen, Iodine, Iron, Neon, Radon.
Describe all three steps of the reaction: (a) protonation of carbon 1 (b) the formation of an allylic, resonance-stabilized carbocation intermediate - explain what this is and which carbons have partial positive charge, and (c) attack of Br- to gi..
how does the rate of formation of O2 compare to (a) the rate of formation of H2O and (b) the rate of disappearance of H2O2?
Could you please help me solve this problem because I am stuck on it. The one that I am having trouble on is in the Problems section and it is number 7.17P
to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
A student mistakenly added concentrated (12M) HCl to a sample of unknown, instead of adding 6M hcl as directed. (1) at first, a large amount of light-colored precipitate formed
The student did not pre-heat the gravity filtration apparatus in Part 3. c) The student forgot to cool 5 mL of solvent in Part 5 and washed the crystals with room-temperature solvent.
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