A big shows up on a weather map as really close/tight isobars & in weather as fast, strong winds dewpoint

air pressure gradient

precipitation

barometer

What is the percent by mass of oxygen in fe2o3

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull