Methanol, CH3OH, is made by causing carbon monoxide and hydrogen gases to react at high temperature and pressure. If 450. mL CO and 825 mL H2 are mixed
under the same conditions of 25oC and 994 mbar,
a. How many moles of each gas is present?
b. Which reactant is present in excess?
c. How many moles of that reactant remains after the reaction?
d. What volume of CH3OH is produced, assuming the same temperature and
pressure?

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.