Express 68000 kg in scientific notation

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

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.