What Is the Energy Change When 72 G of H₂O

question 46

Multiple Choice

What is the energy change when 72 g of H₂O (g) condense to a liquid at 373 K? (ΔH_vap of water = 40.68 kJ/mol; molar mass of H₂O = 18 g/mol)

• A) 81 kJ
• B) 41 kJ
• C) 160 kJ
• D) 210 kJ
• E) 240 kJ

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