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A sanding disk with rotational inertia 8.7 x 10-3 kg·m2 is attached to an electric drill whose motor delivers a torque of magnitude 34 N·m about the central axis of the disk. About that axis and with torque applied for 40 ms, what is the magnitude of the (a) angular momentum and (b) angular velocity of the disk?
calculate the energy absorbed when 2.67 moles of ethyl ether undergo combustion: CH3CH2OCH2CH3(l) + 6O2(g)-> 4CO2(g)+5H2O(l) delta H=+1604 kJ/mol
Use the specific heat of water to determine how much heat is required to raise the temperature of 50.0g of water from 35oC to 55oC.
The label claims this solution is 3.0 % (w/w); that is there are 3.0 grams of H2O2 in every 100 grams of solution. What is the molar concentration of this solution. Assume a density of 1.00 g mL
3.60 bar of NO2 (g) is initially placed in a 1.00 L container. At equilibrium, the total pressure is found to be 4.4 bar. What is the value of Kp under these conditions?
Write structural formulas for both chair conformations of each of the following compounds. (Line drawing is ok - but be very careful in your bond angles - axial versus equitorial must be obvious)
How would you know which would have a higher volatility and who will have the lowest volatility from n-decane, n-heptane and n-pentane?
a solid with an irregular shape and a mass of 11.33 g is added to a graduated cylinder filled with water
Which stage of ionization usually produces more ions and why?
Explain how to write a net ionic equation for what happens when a solid sodium sulfate dissolves when placed in water
A hydrated iron chloride compound was found to contain 20.66% Fe, 39.35% Cl, and 39.99% water. Determine the empirical formula of this hydrated compound.
SO2Cl2, decomposes when heated. The initial concentration of SO2Cl2 was 0.0248 mol/l if the rate constant is 2.2x10^(-2)/s, what is the concentration of SO2Cl2 after 2.0 hours? the reaction is first order. SO2Cl2(g)->SO2(g)+Cl2(g)
A 9.357g piece of iron with Cs of .449J/g*c is placed in a hot water bath with temperature of 98.3C. The metal is placed in a calorimeter that contains 50.0mL of h20(dh20 is 1.00g/mL) at 24.0C. Explain what the final temperature of the water is.
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