2) The phase diagram of a substance is shown above. The area labeled phase for the substance. A) w B) x indicates the solid C) y 3) 3) Show your work! The enthalpy change for converting 10.0 g of ice at -50.0 C to water at 50.0 C is kJ. The specific heats of ice, water, and steam are 2.09 J/g-K, 4.18 J/g-K, and 1.84 J/g-K, respectively. For H2O, AHfus = 6.01 kJ/mol, and AHvap = 40.67 kJ/mol. A) 9.15 B) 4.38 C) 3138 D) 6.47 D) z E) y and z E) 12.28 4) Ethanol melts at -114 C and boils at 78 C at a constant pressure of 1 atm. What state of matter must a sample of ethanol be in at 0C and 1 atm? A) gas 2) 4)