The energies, E, for the first few states of an unknown element are shown here in arbitrary units. n 1 2 3 4 ... E -42 -18 -8 -6 0A gaseous sample of this element is bombarded by photons of various energies (in these same units). Match each photon to the result of its absorption (or lack thereof) by an n=1 electron. Photon Energy Result OPTIONSA 42 n=1 to n=2B 34 n=1 to n=3C 31 n=1 to n=4D 24 electron ejected

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

Match the term to its description match term definition chemical energy a) internal energy caused by vibrations of atoms and molecules electrical energy b) electromagnetic energy that travels in waves radiant energy c) the movement of an electrical charge thermal energy d) potential energy stored in the bonds between atoms