The best answer between the two choices would be the first option TRUE because the scientific method is used to do more advance research and investigation on things.
Ah, this is actually a fairly simple chemistry question.
Recall that at STP, one mole is equivalent to 22.4 L. Knowing this, all you have to do is divide 500 L by 22.4 L to find the number of moles:
500/22.4 = 22.3 mol
-T.B.
Well, an independent variable ids the thing that stays the same and a dependent variable is the thing that changes.
scandium is a transition metal and shows a valency of 3.
