16. Given the unbalanced equation:
_Al + CuSO4 → _A1,(SO2), + --Cu
When the equation is balanced using
the smallest whole-number coefficients,
what is the coefficient of AI?
(1) 1 (2) 2 (3) 3
(4) 4

16 Given the unbalanced equation Al CuSO4 A1SO2 Cu When the equation is balanced using the smallest wholenumber coefficients what is the coefficient of AI 1 1 2 class=