MODEL Draw a diagrant of the soda can calorimeter as a system with energy inputs and outputs represented by arrows showing the
transfer of energy from the chemical reaction. Include labels on the
diagram for chemical, thermal, sound, and electromagnetic energy,
and specify whether each is a form of kinetic or potential energy.

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.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Chemistry worksheet - i am not sure what they are asking for exactly?