What percent of the earth is covered by water? A) 20% B) 50% C) 70% D) 85%

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

Malia was able to make a paper clip float on the surface of water what will most likely happen to the paper clip if a drop of dishwashing detergent is added near it