Which of these statements is true of both endothermic and exothermic reactions A.
They create thermal energy during the reaction.
B.
They require energy to continue.
C.
They require energy to get started.
D.
They absorb energy from the environment

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

  the mississippians were considered to be  horticulturalists, which means they were