The molar heat capacity for an ideal gas at constant pressure is 20.785 ~J ~K⁻¹ ~mol⁻¹. The change in internal energy is 5000 ~J upon heating it from 300 ~K to 500 ~K. The number of moles of the gas at constant volume is _ _ _ _ _ _. [Nearest integer] (Given: R=8.314 ~J ~K⁻¹ ~mol⁻¹)

Chemical Thermodynamics: JEE Main 2022 Chemistry question

JEE Main 2022 · 27 Jul, Morning shift · Q24

JEE Main 202227 Jul, Morning shiftChemistryHardChemical Thermodynamics84× since 2002

The molar heat capacity for an ideal gas at constant pressure is

20.785 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}

. The change in internal energy is

5000 \mathrm{~J}

upon heating it from

300 \mathrm{~K}

500 \mathrm{~K}

. The number of moles of the gas at constant volume is ____________. [Nearest integer] (Given:

\mathrm{R}=8.314 \mathrm{~J} \mathrm{~K}^{-1} \mathrm{~mol}^{-1}

)

Your answerType your answer. Integers and decimals are accepted.

JEE Main 2022 Chemical Thermodynamics Question with Answer (27 Jul Morning shift, Q24) | JEE Arc