In order to adequately control a chain reaction, it is necessary to have within the fissionable material a nonfissionable material. how does this material interact with neutrons? a. the material absorbs neutrons. c. the material scatters neutrons. b. the material emits neutrons. d. the material converts neutrons.

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Calculate the ratio of h+ ions to oh– ions at a ph = 7. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?