Oxygen constantly diffuses from air or water into an animal's bloodstream. for this to happen, the concentration of oxygen in the blood must be (1 point). a. -greater than the concentration of oxygen in the air or water.. b.-greater than the concentration of carbon dioxide in the air or water.. c.-lower than the concentration of oxygen in the air or water.. d.-lower than the concentration of carbon dioxide in the air or water.

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?

Many free radicals combine to form molecules that do not contain any unpaired electrons. the driving force for the radical–radical combination reaction is the formation of a new electron‑pair bond. consider the chemical equation. n(g)+no(g)⟶nno(g) n(g)+no(g)⟶nno(g) write lewis formulas for the reactant and product species in the chemical equation. include nonbonding electrons. n(g)n(g) select draw rings more erase select draw rings more erase select draw rings more erase n no(g)

11) burning your hand when accidentally touching a hot plate is an example of which heat transfer? a. conduction b. convection c. radiation d. none of these