Physics

The Van der Waal's equation of state for some gases can be expressed as:
$$(P + \dfrac{a}{V^2})(V - b) = RT$$
where P is the pressure, V is the molar volume, and T is the absolute temperature of the given sample of gas and a,b and R are constants.
The dimensions of constant b are


ANSWER

$$L^3$$


SOLUTION
$$\left[ V \right] =\left[ b \right] $$
$$\left[ b \right] =\left[ { L }^{ 3 } \right] $$
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