Question

pls help (with step by step)​

Answer 1

$\sf K.E = \dfrac{3}{2}RT$

$\sf K.E\:is\:directly\:proportional\:to\:T$

$\sf 20°C \longrightarrow$ $\sf 40°C$

$\sf Using\:formula,$

$\sf K.E = \dfrac{3}{2}RT$

$\sf \frac{K_{40}}{K_{20}} = \frac{T_{40}}{T_{20}}$

$\sf =\dfrac{273+40}{273+20}$

$\sf =\dfrac{313}{293}$

$\sf Hence,\:option\:2\:is\:correct.$

Answer 2

Answer:

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