Answer:
30.3 g
Explanation:
At STP, 1 mol of any gas will occupy 22.4 L.
With the information above in mind, we calculate how many moles are there in 32.0 L:
Then we calculate how many moles would there be in 16.6 L:
The difference in moles is:
Finally we convert 0.689 moles of CO₂ into grams, using its molar mass: