To find the partial pressure of argon in the mixture, we can use Dalton's law of partial pressures, which states that the total pressure of a gas mixture is equal to the sum of the partial pressures of the individual gases.
The formula is: \[ P_{\text{total}} = P_{\text{Ne}} + P_{\text{Ar}} \]
Where:
- \( P_{\text{total}} \) = total pressure of the mixture
- \( P_{\text{Ne}} \) = partial pressure of neon
- \( P_{\text{Ar}} \) = partial pressure of argon
We know:
- \( P_{\text{total}} = 2.39 , \text{atm} \)
- \( P_{\text{Ne}} = 1.84 , \text{atm} \)
We can rearrange the equation to solve for the partial pressure of argon: \[ P_{\text{Ar}} = P_{\text{total}} - P_{\text{Ne}} \] Substituting the known values: \[ P_{\text{Ar}} = 2.39 , \text{atm} - 1.84 , \text{atm} \] \[ P_{\text{Ar}} = 0.55 , \text{atm} \]
So, the partial pressure of argon is 0.55 atm.