When the concentration of substance B in the reaction above is doubled, all the other factors being held constant, it is found that the rate of the reaction remains unchanged. The most probable explanation for this observation is that:

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.

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante