3. Calculate the concentration of nicotinic acid (HNic), nicotinate (Nic-), and hydrogen ion (H ) in a solution of 0.28 F nicotinate. The Ka for nicotinic acid is 1.40 x 10-5. Also, calculate the pH of the solution.

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease. correct answer for apex - a, its nonpolar end dissolves the grease.

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst