AP EAMCET · Chemistry · States of Matter
At what temperature will the total kinetic energy of 0.30 moles of \(\mathrm{He}\) be same as the total kinetic energy of 0.40 moles of Ar at \(400 \mathrm{~K}\) ?
- A \(400 \mathrm{~K}\)
- B \(300 \mathrm{~K}\)
- C \(273 \mathrm{~K}\)
- D \(533 \mathrm{~K}\)
Answer & Solution
Correct Answer
(D) \(533 \mathrm{~K}\)
Step-by-step Solution
Detailed explanation
Kinetic energy (KE) \(=\frac{3 n R T}{2}\) Here, \(n=\) number of moles \(T=\) temperature \(R=\) rate constant Now, kinetic energy of \(\mathrm{He}=\) total \(\mathrm{KE}\) of \(\mathrm{Ar}\) Now,…
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