Which of these chemical formulas represents both an element and a molecule?

nacl

o2

he

so2

How do you lengthen a pattern piece? (family and consumer science, sewing)

The arrangement of particles is most ordered in a sample of

Many pharmaceutical drugs are organic compounds that were originally synthesized in the laboratory. which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology