SOLUTION
( a) Balanced Chemical Equation
12 Comcast Ball2 4-gt; Bac03 + 2k Claw)
( al )
(b ) Moles of Solid.
Mule ratio = 1: 1.
Mules of Balls that reacted ? 1 16- 68 +18
= 0 . 210024
1000
thus…Science