How is each element represented on the periodic table?? A. By it's number of neutrons

B. By it's chemical symbol

C. By it's year of discovery

D. In alphabetical order

Compare and contrast physical changes with chemical changes.

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m

The appropriate concentration for an iodine sanitizer is