A Group of Explorers in the Antarctic Can Obtain the Water

Multiple Choice

A group of explorers in the Antarctic can obtain the water they need only by melting snow.How much heat does it take for them to make a cup of coffee (100 g water at 100ºC) ? Assume that the snow has an initial temperature of -40ºC; that the latent heats of fusion and vaporization of water are,respectively,333.5 kJ/kg and 2257 kJ/kg; and that the specific heats of ice (snow) and water are,respectively,2.05 kJ/kg · K and 4.18 kJ/kg · K.

A) 33 kJ
B) 50 kJ
C) 75 kJ
D) 83 kJ
E) 310 kJ