What is the mole fraction of NaOH in an aqueous solution that contains 35.0% by mass?

i think it is d. e because the next one is igneous.

i think its 5049.

i hope this !

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".