What's the molar mass of alumina, Al2O3? The atomic weight of aluminum is 26.98 and the atomic weight of oxygen is 16.00.
A) 101.96 g/mol
B) 149.96 g/mol
C) 42.98 g/mol
D) 48.00 g/mol

What was bohr’s contribution to the planetary model

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds

Select the correct location on the image identify the element that humans need to breathe. 2015 er r ights reserved