Fill in the [?]:
1,516,000,000 nm = [?]m
Give your answer in standard form.

Modern weaponry has increased the number of deaths in wars and violent conflicts.

Compare and contrast physical changes with chemical changes.

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.