Medium MCQ +4 / -1 PYQ · JEE Mains 2025

The kinetic energy of translation of the molecules in 50 g of $ \text{CO}_2 $ gas at 17°C is :

  1. A <p>4205.5 J</p>
  2. B <p>3582.7 J</p>
  3. C <p>3986.3 J</p>
  4. D <p>4102.8 J</p> Correct answer

Solution

<p>$$\begin{aligned} & (\mathrm{KE})_{\text {Transsational }}=\left[\frac{3}{2} \mathrm{KT}\right] \times \text { no. of molecule } \\ & \text { No. of molecule }=\left[\frac{50}{44} \times 6.023 \times 10^{23}\right] \\ & (\mathrm{KE})_{\text {Transsational }}=4108.644 \mathrm{~J} \end{aligned}$$</p>

About this question

Subject: Physics · Chapter: Thermodynamics · Topic: Zeroth and First Law

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