First convert 12.0g of Na to moles using the grams to moles conversation and you get about .5219 moles (I didn't use significant figures). Divide that number by 3 because that is the coefficient of Na and you will get about .17398 moles, which is how many moles are in 1. Since Al has a coefficient of 1, .17398 woild be your final answer
I guess examples of solid and gas???? You have to be more descriptive.....
Mass of salt is equal to 218.8125 grams.
I think it’ll be option B.
Reactant at the left product at the rig
