How many moles are in 98.3 formula units of aluminum hydroxide, "Al"("OH")_3 ?

1 Answer
Feb 16, 2018

1.63 xx 10^-22 "moles"

Explanation:

For converting molecules to moles, use Avogadro's constant: 6.02 xx 10^23 "f units/mol"

"98.3 f units"/ (6.02 xx 10^23"f units/mol") = 1.63 xx 10^-22 "mol"

Note: 1.63 is rounded to 3 sig figs... use the calculator; also, remember to label!