Estimate the AHn in kJ for the reaction shown below using the provided mean bond enthalpy values. [Mean bond enthalpies (kJ/mol): C-H = 412, C-C = 387, C=C = 612,C-CI = 338, H-CI = 431] H. H H C=C H-Cl H-C-C-CI HH H

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.