What does the empirical formula of a compound describe? the type and number of atoms the type and ratio of atoms the number of atoms the type and mass of atoms

- An empirical formula describes the type and ratio of atoms present in a chemical compound.

For example, chemical formula for benzene is . It has six carbons and six hydrogens. The ratio of C to H atoms is 1:1 and so the empirical formula of benzene is CH.

a polar bond is formed when electrons are shared unevenly between atoms

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.