If 42.0 kJ of heat is added to a 48.0 -g sample of liquid methane under 1 atm of pressure at a temperature of – 170 °C, what are the final state and temperature of the methane once the system equilibrates? Assume no heat is lost to the surround- ings. The normal boiling point of methane is – 161.5 °C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J>g@K, respectively. [Section 11.4]
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