At 18°C, the volume occupied by the gas is 400 ml. To what temperature, it should be heated so that its volume gets doubled at constant pressure?
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The gas should be heated to 36°C at constant pressure for the volume to double what it was at 18°C.
Explanation:
Given:
Constant pressure.
T1 = 18°C
V1 = 400 ml
V2 = 2 * V1 = 800 ml
T2?
We know that at constant pressure V¹ / T¹ = V² / T²
Substituting the values, we get:
400/18 = 800/T²
Therefore, T² = 800 * 18 / 400
= 36°C
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