Answer:
C. Degree of ionization
Explanation:
The strength of an acid or a base is determined by how many H+/H3O+ or OH- ions are dissociated in solution. Therefore, it's describing the degree of ionization.
Example: HCl is a strong acid because in water it will pretty much 100% dissociate into H+ and Cl- ions.
Helium will have the highest kinetic energy.
Answer: 0.1 mole MgO
Explanation: 1 mole of MgO is equal to its molar mass.
4.00 MgO x 1 mole MgO/ 40g MgO
= 0.1 mole MgO
Convert 57.6 L to dm3 and divide it by 24