True or false: if half of a radioactive substance decays in the first 10 s, the other half will decay in the next 10 s.

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

What conclusion can you draw from this experiment about the components of the black ink?