Which term best matches a potential energy diagram in which the potential energy value of the reactants is less than that of the products

Evaluate this exponential expression,8. (2 + 3)2 – 42

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

Astudent uses universal ph paper to find the ph of three solutions . solution a has a ph of 5 solution b has a ph of 11 and solution c has a ph of 7 identify which solution is acidic which solution is neutral and which solution is basic