Answer:mass CO2 = (mass AS) - (final mass)
Step-by-step explanation:
Answer: See below
Step-by-step explanation:




Simplify:

It's 67/100 because a percent is out of 100 which is already simplified
If you add them all together, you'd get 157. Then you divide by 7 and you'd get 31.4
Number 2 is the answer to you question