Which principal energy level can hold a maximum of 18 electrons

How can you use chemical equations to predict the products of the reaction you can carry out?

The biosphere of the earth is made up of what compound? organic or inorganic?

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.