For a mole of an ideal gas, the pressure (P), volume (V) and temperature (T) are related by the equation PV = 8.31T where P is in kilopascals, V is in litres and T is in Kelvins. Find the approximate change in the pressure, using the differentials, when the volume increases from 12 L to 12.1 L and the temperature drops from 222 K to 217 K. dP≈

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