THE fact that a fourth English edition of this treatise, based on the seventh German edition, has been called for is sufficient testimony, if any were still required, to the excellence of a work which ...

HONOLULU (KHON2) — Mole Day is a special day in the world of chemistry, and it’s celebrated each year on Oct. 23 between the hours of 6:02 a.m. to 6:02 p.m. This day honors Avogadro’s number, which is ...