If KHP sample #1 requires 19.90 mL of NaOH solution to reach an endpoint, what volume should be required for samples #2 and #3?

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".