How Much Energy (Heat) Is Required to Convert 25 $\circ$ C to H₂O(g) at 115

question 125

Multiple Choice

How much energy (heat) is required to convert 25.5 g of H₂O(l) at 35.0 ^$\circ$ C to H₂O(g) at 115.0 ^$\circ$ C

specific heat of ice: $\quad 2.09 \mathrm{~J} / \mathrm{g} \cdot{ }^{\circ} \mathrm{C} \quad \Delta \mathrm{H}_{\mathrm{fus}}=6.02 \mathrm{~kJ} / \mathrm{mol}$
specific heat of water: $4.18 \mathrm{~J} / \mathrm{g}{ \cdot}^{\circ} \mathrm{C} \quad \Delta \mathrm{H}_{\mathrm{vap}}=40.7 \mathrm{~kJ} / \mathrm{mo}$ .
specific hast of steam: $1.84 \mathrm{~J} / \mathrm{g} \cdot{ }^{\circ} \mathrm{C}$

• A) 207 J
• B) 7,630 J
• C) 8,530 J
• D) 9,130 J
• E) 65,200 J

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