Chemistry-
General
Easy

Question

C subscript 6 end subscript H subscript 6 end subscript rightwards arrow C subscript 6 end subscript H subscript 12 end subscript capital delta H equals negative 204 K J 204 kjheat of hydrognentaion of each C=C bond in benzene

  1. -68 kJ    
  2. - 93kJ    
  3. -56kJ    
  4. -88 kJ    

The correct answer is: -68 kJ

Related Questions to study

General
chemistry-

Heat evolved in the reaction H subscript 2 end subscript plus C l subscript 2 end subscript rightwards arrow 2 H C l is 182kJ Bond energies H-H and Cl-Cl are 430 and 242kJ/mole.respectively Thus H-Cl- bond energy is

Heat evolved in the reaction H subscript 2 end subscript plus C l subscript 2 end subscript rightwards arrow 2 H C l is 182kJ Bond energies H-H and Cl-Cl are 430 and 242kJ/mole.respectively Thus H-Cl- bond energy is

chemistry-General
General
physics

What is the equation for a damped oscillator, where k and b are constants and  is  x displacement.

What is the equation for a damped oscillator, where k and b are constants and  is  x displacement.

physicsGeneral
General
physics-

In the given reaction blank subscript z X to the power of A not stretchy rightwards arrow subscript z plus 1 end subscript Y to the power of A not stretchy rightwards arrow subscript z minus 1 end subscript K to the power of A minus 4 end exponent not stretchy rightwards arrow subscript z minus 1 end subscript K to the power of A minus 4 end exponent radioactive radiation are emitted in the sequence

In the given reaction blank subscript z X to the power of A not stretchy rightwards arrow subscript z plus 1 end subscript Y to the power of A not stretchy rightwards arrow subscript z minus 1 end subscript K to the power of A minus 4 end exponent not stretchy rightwards arrow subscript z minus 1 end subscript K to the power of A minus 4 end exponent radioactive radiation are emitted in the sequence

physics-General
parallel
General
physics-

A hypothetical radioactive nucleus decays according to the following seriesblank subscript 72 A to the power of 180 not stretchy rightwards arrow with alpha on top A subscript 1 not stretchy rightwards arrow with beta to the power of minus on top A subscript 2 not stretchy rightwards arrow with alpha on top A subscript 3 not stretchy rightwards arrow with gamma on top A subscript 4 If the mass number and atomic number of A are respectively 180 and72. Then to atomic number and mass number of A will respectively be

A hypothetical radioactive nucleus decays according to the following seriesblank subscript 72 A to the power of 180 not stretchy rightwards arrow with alpha on top A subscript 1 not stretchy rightwards arrow with beta to the power of minus on top A subscript 2 not stretchy rightwards arrow with alpha on top A subscript 3 not stretchy rightwards arrow with gamma on top A subscript 4 If the mass number and atomic number of A are respectively 180 and72. Then to atomic number and mass number of A will respectively be

physics-General
General
physics-

In the given nuclear reaction represents blank subscript 92 U to the power of 238 not stretchy rightwards arrow with alpha on top blank subscript B T h to the power of A not stretchy rightwards arrow with beta on top subscript D P a to the power of C not stretchy rightwards arrow with e on top subscript 92 U to the power of 234

In the given nuclear reaction represents blank subscript 92 U to the power of 238 not stretchy rightwards arrow with alpha on top blank subscript B T h to the power of A not stretchy rightwards arrow with beta on top subscript D P a to the power of C not stretchy rightwards arrow with e on top subscript 92 U to the power of 234

physics-General
General
physics

The energy dissipated in a damped oscillation,

The energy dissipated in a damped oscillation,

physicsGeneral
parallel
General
physics

If the time period of undamped oscillation is T and that of damped oscillatin is , then T,what is the relation between I&.

If the time period of undamped oscillation is T and that of damped oscillatin is , then T,what is the relation between I&.

physicsGeneral
General
physics-

Four lowest energy levels of H-atom are shown in the figure. The number of possible emission lines would be

Four lowest energy levels of H-atom are shown in the figure. The number of possible emission lines would be

physics-General
General
physics

Complete the following sentence In a damped oscillation of a pendulum ..

Complete the following sentence In a damped oscillation of a pendulum ..

physicsGeneral
parallel
General
physics-

When a sample of solid lithium is placed in a flask of hydrogen gas then following reaction happened blank subscript 1 end subscript superscript 1 end superscript H plus blank subscript 3 end subscript L i to the power of 7 end exponent rightwards arrow blank subscript 2 end subscript H e to the power of 4 end exponent plus blank subscript 2 end subscript H e to the power of 4 end exponentThis statement is

When a sample of solid lithium is placed in a flask of hydrogen gas then following reaction happened blank subscript 1 end subscript superscript 1 end superscript H plus blank subscript 3 end subscript L i to the power of 7 end exponent rightwards arrow blank subscript 2 end subscript H e to the power of 4 end exponent plus blank subscript 2 end subscript H e to the power of 4 end exponentThis statement is

physics-General
General
physics

complete the following sentence.Time period of oscillating of a simple pendulum is dependent on...

complete the following sentence.Time period of oscillating of a simple pendulum is dependent on...

physicsGeneral
General
maths-

Let the eleven letters .....,K denote an arbitrary permutation of the integers (1, 2,.....11), then  left parenthesis A minus 1 right parenthesis left parenthesis B minus 2 right parenthesis left parenthesis C minus 3 right parenthesis horizontal ellipsis. left parenthesis K minus 11 right parenthesis

Let the eleven letters .....,K denote an arbitrary permutation of the integers (1, 2,.....11), then  left parenthesis A minus 1 right parenthesis left parenthesis B minus 2 right parenthesis left parenthesis C minus 3 right parenthesis horizontal ellipsis. left parenthesis K minus 11 right parenthesis

maths-General
parallel
General
physics-

The following diagram indicates the energy levels of a certain atom when the system moves from 2 E level to E, emitting a photon of wavelength lambda. The wavelength of photon produced during its transition from fraction numerator 4 E over denominator 3 end fraction level to E is

The following diagram indicates the energy levels of a certain atom when the system moves from 2 E level to E, emitting a photon of wavelength lambda. The wavelength of photon produced during its transition from fraction numerator 4 E over denominator 3 end fraction level to E is

physics-General
General
physics

pitch of screw gauge is 1 mm and there are 100 divisions on the circular scak. What measurin the diametcr of a wire, the linear scale reads, 1 mm and 47t  division on the circular scale coincide with the reference line. The lengthof the wire  155.6 cm. What will be the curved surface area (in cm2 of the wire in appropriate number of significant figures.

pitch of screw gauge is 1 mm and there are 100 divisions on the circular scak. What measurin the diametcr of a wire, the linear scale reads, 1 mm and 47t  division on the circular scale coincide with the reference line. The lengthof the wire  155.6 cm. What will be the curved surface area (in cm2 of the wire in appropriate number of significant figures.

physicsGeneral
General
physics-

The nucleus blank subscript 48 superscript 115 Cd after two successive beta to the power of minus decays will give

The nucleus blank subscript 48 superscript 115 Cd after two successive beta to the power of minus decays will give

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.