how many grams are in 4.5 moles of LI2O

Answer 1

Find the molar mass of Li₂O

From the periodic table:

1 Li = 6.941 g x 2 = 13.882 g

1 O = 15.999 g

Total = 13.882 + 15.999 = 29.881 g/mole

4.5 moles LI₂O x 29.881 g/mole = answer (report it to 2 significant figures)