The two conducting cylinder-piston systems shown below are linked. Cylinder 1 is filled with a certain molar quantity of a monatomic ideal gas, and cylinder 2 is filled with an equal molar quantity of a diatomic ideal gas. The entire apparatus is situated inside an oven whose temperature is Ta=27∘C. The cylinder volumes have the same initial value V0=100cc. When the oven temperature is slowly raised to Tb=127∘C. . The volume change ΔV (in cc) of cylinder 1 is _________.