Which of the following statements best describes the current atomic theory? Question 14 options:

Electrons are evenly distributed throughout a mixture of positive and neutral particles.

Electrons exist in specific energy levels but we cannot predict their exact location or velocity.

Electrons are held in an atom by their attraction to each other

Electrons move in circular motion around the nucleus.

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

Give a real-world example of an energy transformation that uses two of the following forms of energy: chemical, mechanical, nuclear, gravitational, radiant, electrical, thermal (heat), and/or sound.

If 2 molecules of one reactant combine with 3 molecules of another to produce 5 molecules of a product, then what is the representation of the reaction?