The polyatomic nitrate ion (NO3−) is present in both the products and the reactants of the chemical equation shown below. Ba(NO3)2 + 2LiOH → Ba(OH)2 + 2LiNO3 How many nitrate ions are in the products and the reactants of the chemical equation?

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

How many absorptions would you expect to observe in the 13c nmr spectra of the following molecules? a) 3-chloropentane b) cis-4-methyl-2-pentene