Classify the following as Arrhenius, Bronsted-Lowry, or Lewis acid-base reactions. A reaction may fit all, two, one, or none of the categories: I. Cu2+ + 4 Cl− CuCl42− II. Al(OH)3 + 3HNO3 Al3+ + 3H2O + 3 NO3− III. N2 + 3 H2 2NH3 IV. CN− + H2O HCN + OH−

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Identify and describe the three ways that mutations affect organisms.

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.