In this equation, 2mg + o2 → 2mgo, what is the coefficient of the oxygen molecule?

a. 2

b. 1

c. 4

d. 0

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

Which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.