Final answer:
Using the ideal gas law, calculate the number of moles of ethane from the provided pressure, volume, and temperature. Multiply the number of moles by the molar mass of ethane (30.07 g/mol) to find the mass.
Step-by-step explanation:
To calculate the mass of the ethane gas inside the storage tank, we first have to apply the ideal gas law, which states that the pressure times the volume of a gas is equal to the number of moles times the gas constant times the temperature (P*V = n*R*T). With the given information, the only unknown in the equation is the number of moles (n).
After finding the number of moles, the mass of the ethane can be calculated by multiplying the number of moles by the molar mass of ethane, which is approximately 30.07 g/mol. Please note that the Lee-Kesler Equation of state (EOS) can provide more accurate results than the ideal gas law, especially for high pressures and temperatures, but the necessary parameters for using it (like accentric factor and critical constants) were not provided in the question.
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