A balloon filled with an air sample occupies 3 L volume at 35 °C. On lowering the temperature to T, the volume decreases to 2.5 L. The temperature T is [Assume P constant]
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Always convert Celsius to Kelvin in gas law problems: \( K = °C + 273 \). Charles's Law: \( V_1/T_1 = V_2/T_2 \) at constant pressure.