4. Compound X is quite soluble in toluene, but only slightly soluble in petroleum ether. How could these solvents be used in combination in order to recrystallize X?
4. Compound X cukup telat ing luene, nanging Mung rada telat ing Petroleum ether. Carane bisa iki cairan pelarut gawé digunakake ing kombinasi supaya crystallize X-ray?