In a Phase Change of Water Between the Liquid and the Gas

question 34

Multiple Choice

In a phase change of water between the liquid and the gas phases, 770.1 kJ of energy was released by the system. What was the product, and how much of it was formed in the phase change? (Data: H₂O(l) → H₂O(g) ΔH = 44.01 kJ/mol.)

• A)315 g water vapor was produced.
• B)17.5 g of water vapor was produced.
• C)17.5 mol of water vapor was produced.
• D)17.5 mol of liquid water was produced.
• E)17.5 g of liquid water was produced.

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