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A sample containing 45.0 moles of propane gas at a temperature of 25.0 °C is stored in a 15.0-liter cylinder. What is the pressure of the gas inside the cylinder?

A. 6.2 atm
B. 73.4 atm
C. 22.4 atm
D. 85.6 atm

Answer :

Final answer:

The pressure of the gas inside the cylinder is 73.4 atm. Therefore, the correct option is B.

Explanation:

To calculate the pressure of the gas inside the cylinder, we can use the ideal gas law equation:

Pressure (P) = (Number of moles (n) * Gas constant (R) * Temperature (T)) / Volume (V)

In this case, we have 45.0 moles of propane gas, a temperature of 25.0 °C (which should be converted to Kelvin by adding 273), and a volume of 15.0 liters.

We can substitute these values into the equation:

Pressure = (45.0 moles * 0.0821 atm·L/mol·K * (25.0 + 273) K) / 15.0 L

= 73.4 atm

Therefore, the pressure of the gas inside the cylinder is 73.4 atm.

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