Light travel in _ lines until reflected or refracted .

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.