Which chemical species can form an ionic bond with an anion?
Hg22+
NO2–
SO32–
Ar

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

Anitrogen atom and an oxygen atom combine chemically to form nitric oxide. what is nitric oxide?