Question

question 18 (5 points)
listen
a closed container holds 2.0 moles of co₂ gas at stp. how many moles of oxygen can be placed in a container of the same size at stp?
a) 4 moles
b) 3 moles
c) 2 moles
d) 1 mole

Explanation:

Step1: Recall Avogadro's Law

Avogadro's Law states that at the same temperature and pressure (STP here), equal volumes of gases contain equal numbers of moles. So, for a container of the same size (same volume), at STP, the number of moles of any gas will be the same if the volume, temperature, and pressure are the same.

Step2: Apply the Law to the Problem

The container holds 2.0 moles of \( \text{CO}_2 \) at STP. For a container of the same size (same volume) at STP, the number of moles of \( \text{O}_2 \) (or any gas) should be equal to the moles of \( \text{CO}_2 \) because volume, temperature, and pressure are the same. So the moles of \( \text{O}_2 \) will also be 2.0 moles.

Answer:

C) 2 moles