100 kJ of energy is introduced to your cell phone while it charges but 10 kJ of energy is lost in the process as heat given off to the surroundings. What is ΔE for the system?Group of answer choices-110 kJ-90 kJ+90 kJ+110 kJ
Question
100 kJ of energy is introduced to your cell phone while it charges but 10 kJ of energy is lost in the process as heat given off to the surroundings. What is ΔE for the system?Group of answer choices-110 kJ-90 kJ+90 kJ+110 kJ
Solution
The ΔE for the system can be calculated by subtracting the energy lost from the energy gained.
Here's how you can do it:
- Identify the amount of energy introduced to the system. In this case, it's 100 kJ.
- Identify the amount of energy lost by the system. In this case, it's 10 kJ.
- Subtract the energy lost from the energy gained to find the change in energy (ΔE).
So, ΔE = Energy gained - Energy lost = 100 kJ - 10 kJ = 90 kJ
Therefore, the ΔE for the system is +90 kJ.
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