My chemistry is so hard

A water sample contains the pollutant chlorobenzene with a concentration of 15 ppb. What is the molarity of this solution? Assume the density of the solution is 1.00 g/mL. The molar mass of chlorobenzene is 112.6 g/mol.

When sodium fluoride dissolves and dissociates in water, a solvation sphere of water molecules forms around the ions. The solute solvent interaction and makes the beaker warm.

What is the volume in l of 3.9 kg of ethylene glycol?

What solvent would you use to determine the density of zinc chloride?

Be sure to answer all parts. What is the strongest type of intermolecular force between solute and solvent in each solution?

What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table

What does it mean when there are 2.3 x 10-4 moles?

Electric force is an A. attraction and repulsion between protons and electrons . B. attraction and repulsion between protons and neutrons. C. attraction and repulsion between neutrons and electrons.

A salt crystal has a mass of 0.18 mg. how many nacl formula units does it contain?

Which of the following is easist to accelerate? A. bowling ball B. tennis ball C. golf ball D. ping pong ball