In nuclear chemistry, the key requirement for a chain reaction is . each event must produce more than one particle capable of initiating subsequent events. b. the number of beta particles emitted must be equal to or greater than the number of gamma particles emitted. c. the entropy of the system must decrease. d. the uranium hexafluoride fuel must be in its solid state.

Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake? o a. warm water has a greater heat of vaporization. ob. warm water evaporates more quickly. cool water evaporates more quickly. od. cool water has a greater heat of vaporization.

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.