Albr3 + k2so4 → kbr + al2(so4)3

what are the coefficients required to balance the chemical equation?
a) 1,3,6,1
b) 2,1,6,1
c) 2,3,1,1
d) 2,3,6,1

On the left, you have

1 Al3 Br2 K1 S4 O

while on the right, you have

1 K1 Br2 Al3 S12 O

To get a balanced equation, you'll need 6 KBr on the right, which would require 2 AlBr3 and 3 K2SO4 on the left, so you end up with

The chemical reactions lab we did is typically called a "copper plating lab,  because the acid solution cleaned the pennies and made the copper look shinier;   the acid solution cleaned the paperclips and made them look like pennies;   &   the copper from the pennies was removed, and then added to the paperclips. 

It is 5 hope this you out