10.1 g cao is dropped into a styrofoam coffee cup containing 157 g h2o at 18.0°c. if the following reaction occurs, then what temperature will the water reach, assuming that the cup is a perfect insulator and that the cup absorbs only a negligible amount of heat? [specific heat of water = 4.18 j/g·°c]

cao(s) + h2o(l) → ca(oh)2(s) triangleh^0(subcript rxn) = −64.8 kj/mol

a. 18.02°c b. 35.8°c c. 311°c d. 42.2°c e. 117°c

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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