Calculate the Amount of Heat Energy, in Units of Kilojoules $\degree$

question 88

Multiple Choice

Calculate the amount of heat energy, in units of kilojoules, required to evaporate 35.0 g of ethanol, CH₃CH₂OH, at 78.4 $\degree$ C, ethanol's boiling point.(The molar heat of vaporization of liquid ethanol is 3.86 x 10⁴ J/mol.The molar mass of ethanol is 46.07 g/mol.)

• A)29.3 kJ
• B)1.35 x 10³ kJ
• C)1.10 x 10³ kJ
• D)8.38 x 10² kJ
• E)9.21 x 10^-4 kJ

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