QuestionJune 17, 2025

Determine whether the sign of Delta E is positive or negative for each system. Drag the items into the appropriate bins. View Available Hint(s) }(l) A draft is Paglimes Bible for the Reaganic & A detail and acid chemical mixture is warmed with a hot plate. (System: reaction mixture) & Ice in a glass of water melts, cooling the water around it. (System: melting ice) Positive & & Negative

Determine whether the sign of Delta E is positive or negative for each system. Drag the items into the appropriate bins. View Available Hint(s) }(l) A draft is Paglimes Bible for the Reaganic & A detail and acid chemical mixture is warmed with a hot plate. (System: reaction mixture) & Ice in a glass of water melts, cooling the water around it. (System: melting ice) Positive & & Negative
Determine whether the sign of Delta E is positive or negative for each system. Drag the items into the appropriate bins. View Available Hint(s) }(l) A draft is Paglimes Bible for the Reaganic & A detail and acid chemical mixture is warmed with a hot plate. (System: reaction mixture) & Ice in a glass of water melts, cooling the water around it. (System: melting ice) Positive & & Negative

Solution
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Answer

Positive: Raft inflation, Chemical mixture heating; Negative: Melting ice Explanation 1. Identify the system and process For each scenario, identify whether energy is absorbed or released by the system. 2. Analyze the raft inflation Inflating a raft requires work done on the gas, increasing its internal energy. \Delta E is positive. 3. Analyze the chemical mixture heating Heating the reaction mixture adds energy to it. \Delta E is positive. 4. Analyze the melting ice Melting ice absorbs heat from the surroundings, decreasing the internal energy of the water. \Delta E is negative for the melting ice.

Explanation

1. Identify the system and process<br /> For each scenario, identify whether energy is absorbed or released by the system.<br /><br />2. Analyze the raft inflation<br /> Inflating a raft requires work done on the gas, increasing its internal energy. $\Delta E$ is positive.<br /><br />3. Analyze the chemical mixture heating<br /> Heating the reaction mixture adds energy to it. $\Delta E$ is positive.<br /><br />4. Analyze the melting ice<br /> Melting ice absorbs heat from the surroundings, decreasing the internal energy of the water. $\Delta E$ is negative for the melting ice.
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