Explanation:
Use the Ideal Gas Law:
PV = nRT
where P is absolute pressure,
V is volume,
n is number of moles,
R is the universal gas constant,
and T is absolute temperature.
First, identify which variables in the problem are constant (note that R is always a constant).
Next, solve for the constants and use that equation to write a proportion.
Finally, plug in the given values and solve for the unknown variable.
For example, if n and R are the constants:
nR = PV/T
Therefore:
P₁V₁/T₁ = P₂V₂/T₂
