The number of atoms in the reactants has to be Equal to

less than

greater than

Which best describes why nh4+ can form an ionic bond with ci-?

Chemistry worksheet - i am not sure what they are asking for exactly?

In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j