Identify the items in the list below that are examples of matter. check all that apply. idea iron sugar sound glass neon gas choose the correct description for each of the properties below:

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

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.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?