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.
