What type of radiation doesn't affect the number of protons and neutrons, but does have a high amount of energy and is very dangerous

How manyatoms of mercury are in 1.4214e+1 ml sample

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

2-bromo-2-methylbutane undergoes an e1 elimination reaction in the presence of ethanol. in the next reaction only one of the possible products is represented. although the product shown is not the major product of the reaction, notice that there is more than one way it can be produced. complete the mechanism and draw the missing substances.