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How can the enthalpy of the hydrogenation of benzene be measured from its enthalpy of combustion and the enthalpies of combustion of cyclohexane and hydrogen? Make use of Hess's law.
The energy difference among the formula proposed by Kekulé and the real bonding situation can be estimated by comparing the theoretically estimated and experimentally found enthalpies of hydrogenation for benzene. The enthalpy of hydrogenation of cyclohexene is 120 kJ mol-1. This value is the energy of hydrogenation of a double bond.
If value of azimuthal quantum number l is 2, then total possible values of magnetic quantum number will be: (1) 7 (2) 5 (3) 3 (4) 2 Ans: 3
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The covalency of nitrogen in HNO 3 is: (1) 0 (2) 3 (3) 4 (4) 5 Ans: 5
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Quantum numbers of an atom can be defined on the basis of: (1) Hund's rule (2) Aufbau's principle (3) Pauli's exclusion principle (4) Heisenberg's uncertainty principl
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Explain about the Impact extrusion Blank is placed over the die and pressed by punch. Metal is squirted upward round the punch. Thickness of the part is fixed by the gap bet
Statistical experimental methods are used in product development. In order to adopt the statistical product design or experimental method, it is necessary to understand the basic c
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