Calculate the amount of energy in kilojoules needed to change 207 g of water ice at -10 °C to steam at 125 ° C. The following constants may be useful: Cm (ice) = 36.57 J mol 1 °C-1 Cm (water) = 75.40 J mol-1 °C-1 Cm (steam) = 36.04 J mol-1 °C1 Afus H = +6.01 kJ mol-! Avap H = +40.67 kJ mol¯1

Chemistry: The Molecular Science
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Author:John W. Moore, Conrad L. Stanitski
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Chapter9: Liquids, Solids, And Materials
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Calculate the amount of energy in kilojoules needed to change 207 g of water ice at –10
°C to steam at 125 ° C. The following constants may be useful:
Cm (ice) = 36.57 J mol-1 °C-1
• Cm (water) = 75.40 J mol-1 °C-1
Cm (steam) = 36.04 J mol-1 °C-1
Afus H = +6.01 kJ mol 1
Avap H = +40.67 kJ mol-
-1
Transcribed Image Text:Calculate the amount of energy in kilojoules needed to change 207 g of water ice at –10 °C to steam at 125 ° C. The following constants may be useful: Cm (ice) = 36.57 J mol-1 °C-1 • Cm (water) = 75.40 J mol-1 °C-1 Cm (steam) = 36.04 J mol-1 °C-1 Afus H = +6.01 kJ mol 1 Avap H = +40.67 kJ mol- -1
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