In a synthesis reaction, one reactant contains 346 j of chemical energy and one reactant contains 153 j of chemical energy. the product contains 435 j of chemical energy. because energy is conserved, what energy change occurs during the reaction?

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

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.