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how much heat is liberated in the reaction of 5.0g of Al and 20.0g of Fe2O3 producing extensively Fe and Al2O3
water in a coffee-cup calorimeter (see above figure) the temperature rises from 24.00 oC to 40.03 oC. Calculate H in kJ/mol FeCl3 for the solution process.FeCl3(s) Fe3+(aq) + 3 Cl-(aq)
A sample of ideal gas at room temperature occupies a volume of 23.0l at a pressure of 232torr . If the pressure changes to 1160torr , with no change in the temperature or moles of gas, what is the new volume,V2 ?
Describe the major organic product(s) of this reaction. CH3C?CD + CH4 or CH3C?CCD or CH3C?CCH3 or CH3C?CD + CH3D or CD3C?CD3
Sketch a molecular orbital energy level, show the symmetry for each one, and indicate how each orbital is formed from the group orbital of 2H atoms and the atomic orbitals of S atom.
The hydrolysis of ethyl acetate (CH3COOC2H5) by sodium hydroxide yields ethanol (C2H5OH) and sodium acetate (NaO2CCH3) by the reaction shown
Calculate the following to determine Kc for FeSCN2+. a,) moles Fe3+ initially present. b.) moles SCN- initially present
In the hydrogen atom, for which transition is the emission line observed at shorter wavelength, n=4 to n=2 or n=5 to n=1? Show the equation needed to figure this out. Consider the relative size of delta E to determine the relative wavelength.
Determine the activity of 50 mg of radium-226 (t1/2 =1600 years) in becquerels and in millicuries.
What is the half-life of a compound if 85 percent of a given sample of the compound decomposes in 45 min? Assume first-order kinetics.
burning 480 cm3 of propane measured at r.t.p,caused the temperture of 250 cm3 of water to increase by 42.5 celsius. calculate the heat of combustion of propane.
what is the minimum rate that fresh air has to be supplied to the room so that the concentration of CO2 in the room doesn't exceed 0.500% by mole? Assume the room is well mixed, and the volume of the solid dry ice does not change. mol air/min
This question deals with the reaction between benzene and 1-chloro-2-methylpropane in the presence of AlCl3. Knowing that the arenium ion intermediate has positive charge on the ortho and para carbons
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