
Concept explainers
Interpretation: The new pressure of the propane gas needs to be determined.
Concept Introduction:
The ideal gas equation is represented as follows:
Here, P is pressure, V is volume, n is number of moles, R is Universal gas constant and T is temperature of the gas.

Answer to Problem 7RE
2.05 atm.
Explanation of Solution
Given Information:
The initial pressure and temperature of the propane gas is 2.00 atm and 30 oC respectively. The temperature increased to 37 oC.
Calculation:
First convert the given temperature to K as follows:
Thus,
Thus,
Also,
Thus,
The ideal gas equation is as follows:
The volume of the tank remains the same and the number of moles of propane gas also remains the same thus, for constant volume and number of moles,
On rearranging,
Putting the values,
Thus, the new pressure of the propane gas is 2.05 atm.
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