The carbon dioxide level in the atmosphere today is often compared with that in preindustrial days. Explain how scientists use tree rings and air trapped in polar ice to arrive at the comparison.
Chapter 4: Reactions in Aqueous Solutions I. Solubility is the maximum amount of solute that will dissolves in a given quantity of solvent at a specific temperature. II. Solubility Rules: Alkali (Group AI) = soluble (gives up electrons for positive charge) + 2+ 2+ 2+ Halides (Cl, Br, I) = soluble, except with Ag , Cu , Pb , Hg 2 (takes up electrons for negative charge) Ammonium compounds (NH ), nitrates(4O ), bicarbonates 3HCO ), and chlorates 3 (ClO ) = soluble 3 (SO )4= soluble, except with Ag , Ca , Sr , Ba , Hg 2+ 2+ 22+ Hydroxides
