Two moles of ideal helium gas is in a rubber balloon at 30° C. The balloon is filled expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is changed to 350C. The amount of heat required in raising the temperature is nearly (.R=8.3J/mole-k.)

Question

Two moles of ideal helium gas is in a rubber balloon at 30° C. The balloon is filled expandable and can be assumed to require no energy in its expansion. The temperature of the gas in the balloon is changed to 350C. The amount of heat required in raising the temperature is nearly (.R=8.3J/mole-k.) (A) 62J (B) 104J (C) 124J (D) 208J

Tardigrade Admin · Accepted Answer

Q=nCpd=n(5/2)RdT=2× (5/2)× 8.3× 5=208J

$62 J$

$104 J$

$124 J$

$208 J$

$Q = n C_{p} d = n \frac{5}{2} R d T = 2 \times \frac{5}{2} \times 8.3 \times 5 = 208 J$

62J

104J

124J

208J

Q=nCp​d=n25​RdT=2×25​×8.3×5=208J

$62 J$

$104 J$

$124 J$

$208 J$

$Q = n C_{p} d = n \frac{5}{2} R d T = 2 \times \frac{5}{2} \times 8.3 \times 5 = 208 J$