The chemical equation, Cr + Fe(NO3)3 → Fe + Cr(NO3)3, is an example of which type of reaction?

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.

it is b that is the answer.

ok whats the question if not i cannot you i need question and need a thing to answer