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How many mol of CH4 are in a 150 L tank exerting a pressure of
20.0 atm when the temperature is 24.0 degrees Celsius?
Summary:
1. Recognize the problem as Ideal
Gas Law Problem. To help recognize the problem we note the substance is referred
to as a gas either implicitly or explicitly and any information in the problem
are physical properties of the substance, i.e., pressure, volume, temperature,mol,
density, or mass of the gas.
2. Recognize the problem has only
one condition, it is a single variable problem.
3. Write the Ideal Gas Equation;
PV = nRT
4. Construct a table and assign
a value from the problem statement to each of the variables in the Ideal
Gas Equation.
5. Convert units of each variable
into the units corresponding to the value of R; 0.0821 L atm mol-1
K-1
6. Substitute the values into the
equation and solve for the unknown.