Alpha particles cannot penetrate the skin. In which of the following circumstances could they still threaten human health? A. If they travel into the human eye.
B. If they are inhaled or swallowed.
C. If they enter into the human ear.
D. If they are touched.

B. If they are inhaled or swallowed.

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

answerlinnaeus;