The low-lying levels of 13-n are the ground state, 1/2-; 2.37 mev, 1/2+; 3.51 mev, 3/2-; and 3.55 mev, 5/2+. the next states are about 6.5 mev and above. interpret these four states according to the shell model.

Seawater contains approximately 3.5%nacl by mass and has a density of 1.02 g/ml. what volume of seawater contains 7.5 g of sodium?

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.

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as