Match these Items. assumes constant pressure
assumes continuous motion
direct relationship between variables
involves three variables
explains basis of gas pressure
PxV=k
inverse relationship between variables
explains diffusion
assumes constant temperature

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.

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1 is the answer to this problem