Which is the chemical name of the product formed when copper reacts with gas in air?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

Draw two cyclic constitutional isomers of cis-1

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid