A thermally insulated vessel contains `150g` of water at `0^(@)C`. Then the air from the vessel is pumped out adiabatically. A fraction of water turms into ice and the rest evaporates at `0^(@)C` itself. The mass of evaporated water will be closest to :
(Latent heat of vaporization of water `=2.10xx10^(6)jkg^(-1)` and Latent heat of Fusion of water `=3.36xx10^(5)jkg^(-1)`)

Options

A. 20 g
B. 130 g
C. 35 g
D. 150 g

Answer

A

Explanation

`ML_v=(150-m)L_f`
`m xx 540 -(150 - m)xx80`
`implies m ~~ 20 g`