A bubble of 8 mole of helium is submerged at a certain depth in water . The temperature of water increases by `30^(@)C` . How much heat is added approximately to helium during expansion ? M

Options

A. A)4000 J
B. B)3000 J
C. C)3500 J
D. D)4500 J

Answer

B

Explanation

Heat added to helium during expansion
`H=nC_(v)DeltaT=8xx(3)/(2)Rxx30`
`(C_(v)"for monoatomic gas "=(3)/(2)R)`
`=360R`
`=360xx8.31J " " (R=8.31J//mol-K)`
`~~3000J`