One method of experimentally determining whether a species is paramagnetic is to weigh it in an instrument called a magnetic susceptibility balance. this is a balance with a strong electromagnet placed next to the sample holder. if the species is paramagnetic, the mass reading of the balance will increase when the field is switched on.
classify these species as paramagnetic or diamagnetic
which species will have the strongest mass shift on a magnetic susceptibility balance?

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

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.