Select all of the Earth Systems that contain carbon. Oa Atmosphere
Ob Geosphere
Oc Biosphere
Od Hydrosphere

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Calculate the number of molecules present in 0.750 mol of mgo.

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride