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A gas is heated isobarically (at constant pressure) from a temperature $T_1 = 300$ K to $T_2 = 450$ K. The initial volume of the gas is $V_1 = 2$ L. Find the final volume of the gas.
An ideal gas at pressure $p = 2 \cdot 10^5$ Pa and temperature $T = 300$ K occupies a volume $V = 0.01$ m³. Find the amount of substance of the gas. The universal gas constant is $R = 8.31$ J/(mol·K).