An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

The name of the ion, s2-, is: sulfurous ion sulfide ion sulfur ion sulfate ion

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing

To separate a mixture of hard candies nd marbles the most efficient method would be