What symbol is used to separate the products from each other or the reactants from each other in a chemical reaction? an arrow pointing to the left a plus sign an equal sign an arrow pointing to the right

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

the temperature of the gas, in k, not celsius.

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.

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa