ThermodynamicsMedium
Question
Two moles of ideal helium gas are in a rubber balloon at 30oC. The balloon is fully expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is slowly changed to 35oC. The amount of heat required in raising the temperature isnearly (take R = 8.31 J/mol.K)
Options
A.62 J
B.104 J
C.124 J
D.208 J
Solution
ᐃQ = nCp ᐃT (Isobaric process)
= 2 ×
R × (35 - 30)
= 208J
= 2 ×
R × (35 - 30)= 208J
Create a free account to view solution
View Solution FreeMore Thermodynamics Questions
Two cylinders A and B fitted with pistons contain equal amounts of an ideal diatomic gas at 300 K. The piston of A is fr...The value of the ratio Cp/Cv for hydrogen is 1.67 at 30 K but decreases to 1.4 at 300 K as more degrees of freedom becom...In an adiabatic change, the pressure and temperature of a monoatomic gas are related with relation as P ∝ TC, wher...Find the amount of work done to increase the temperature of one mole of ideal gas by 30oC. if it is expanding under the ...For free expansion of a gas in an adiabatic container which of the following is true ?...