The symbol for magnesium is Mg, and sulfuric acid is a compound containing sulfur, oxygen, and hydrogen. Its formula is written: H2SO4. So we write Mg plus H2SO4.

Uday Parekh, an Air Products and Chemicals employee, made a witty connection when he saw today’s date written as 02-02-02. Why not celebrate a date that visually symbolizes oxygen, a product ...