Question

calculate the kinetic energy of 4 grams of CH4 at -73°C

Answer 1

Kinetic Energy=3nRT/2
Here, n=4/16 =0.25 and T =200 K ,
R=8.314 J /mol K
So, KE = 623.55 J
Hope this may help you. Thank You.

Answer 2

$\huge\boxed{\underline{\mathcal{\red{A}\green{N}\pink{S}\orange{W}\blue{E}\purple{R}}}}$

• n= no of moles of methane.
• $\frac{4g}{16mol^-1}$=${0.25mol}$.
• R=${8.314Jmol^-1k^-1}$
• T=${-73\degree}C$+${273=200k}$
• KINETIC ENERGY
• $\frac{3}{2}$×0.25mol×8.314${mol^-1k^-1}$[tex]{×200k=623.6J}[/tex