Hydrogen cyanide (hcn) is a product of combustion that:
select one:
a. is released when wood and other natural materials are burned.
b. is equally as toxic as carbon monoxide (co).
c. targets the brain after being inhaled, ingested, or absorbed into the body.
d. acts as a respiratory stimulant, increasing respiratory rate and increasing oxygen to blood cells.

Which is an example of an exothermic process?

Afisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. it takes a time of 2.70 s for the boat to travel from its highest point to its lowest, a total distance of 0.700 m. the fisherman sees that the wave crests are spaced a horizontal distance of 6.50 m apart. a. how fast are the waves traveling? b. what is the amplitude a of each wave?

What do scientists use a scientific law for?