How many moles are in 89.0 grams of aluminum?

Answer 1

all you have to do to fine the moles of any element is divide the given grams by the molar mass (which you can find on a periodic table of elements)

Likewise, if you need to find the grams, just multiply the number of moles by molar mass.

moles = grams/molar mass

grams = moles x molar mass

your equation should look like this:

moles = 89.0 / 17.0

moles = .471