The potentially explosive gas given off when charging a battery is: choose one answer. a. oxygen. b. hydrogen. c. helium. d. nitrogen.

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

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

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm