What is the total energy change for the following reaction: co + h2o -> co2 + h2? given: c-o bond: 358 kj/mol h-o bond: 463 kj/mol h-h bond: 436 kj/mol a. +132 kj/mol b. +1152 kj/mol c. +27 kj/mol d. -541 kj/mol

1)Delta H=(Delta H of reactants)-(Delta H of products)

2)And we know CO have 3 bond CO and CO2 have 2 bond that each of them are 2 bond, please see the picture!

so lets answer it:

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.

if it's not useful, feel free to report for mistake in answer.

a is the correct answer