How to Find Grams Using the Van der Waals Equation
- 1). Isolate n, the number of moles, which can thereby be converted to mass in grams, by dividing each side by RT, yielding the equation [P + (a^2/V^2)](V - b)]/RT = n.
- 2). Solve for n based on the values in your given experiment or problem.
- 3). Convert n (again, the number of moles) to grams, using the formula (grams/moles)/(molar mass in grams)/(one mole). The specific values will depend on the gas whose properties you're trying to solve for.
- 4). Multiply each side by n to isolate the variable g, in grams, and perform the calculations to find the number.
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