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A wheel with a moment of inertia of 5.5 kg•m2 is rotating with an angular speed of 54 rad/s. A second wheel with a moment of inertia of 2.25kg•m2, initially at rest, is suddenly coupled to the same shaft. What is the angular speed of the resulting combination? (Hint: think about momentum, before, and then after)
a compound is found to contain 39.12 carbon 8.772 hydrogen and 52.11 oxygen by weight. what is the empirical
A student wanted to dry some diacetone alcohol A and allowed it to stand over andydrous potassium carbonate for a week. At the end of the week the sample was found to contain pure acetone. Propose a mechanism for the reaction that took place.
What volume (mL) of the solvent HCCl3 should be added to 0.298 kg of the solute acetone to prepare a solution that is 1.12 m (CH3)2CO.
The vapor pressure of benzene (C6H6) is 40.1 mm Hg at 7.6 C. The delta H vap=31.0 KJ/mol, what is benzene's vapor pressure at 60.6 C?
A solution is made by dissolving 18.4g of HCl in 662 mL of water. Calculate the pH of the solution. Assume that the volume of the solution is also 662 mL
If the balloon rises to an altitude at which the temperature is -2.8°C and the pressure is 0.068 atm, what will the volume of the balloon be?
Hydrogen fluoride behaves as a weak acid in solution. Two equilibria influence which fluorine containing species are present in solution.
A solution containing Pb(NO3)2 is titrated against KI solution so that PbI2 will precipitate out (ksp PbI2 = 7.9 x 10-9). Which ions will form the adsorption layer on the precipitate particles before and after the equivalence point, respectively
Question- Suppose that 25.0 mL of a 0.440 M NaF solution is added to 25.0 mL of a 0.320 M Ba(NO3)2 solution. The total ionic equation is: 2NaF(aq) + Ba(NO3)2(aq) ==> BaF2(s) + 2NaNO3(aq). What mass of BaF2 would precipitate
A uniform air flow over a plane wall at Mach 2.2 and with a temperature of 325 K encounters a symmetrical triangular "bump" on the wall.
a mole of n-hexane is confined in a volume of 0.500L at 600 K. What will be the pressure according to a) the ideal gas law and b) the van der Waals equation
Using the 3D velocity distribution function in a spherical polar coordinate system, derive the general flux equation
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