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enyata [817]
3 years ago
11

A candy bar has _______ energy. A. Kinetic B. Potential

Chemistry
1 answer:
sladkih [1.3K]3 years ago
4 0

Answer:  b

Explanation:

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On the opposite side of the rock.

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Which of the following processes rearranges atoms into new molecules during a reaction?
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Why is paper chromatography used for amino acids
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Read 2 more answers
What is the change in internal energy (ΔΕ) of a system when 5 kJ of work is done on the system while it releases 13 kJ of energy
meriva

The change in internal energy (ΔΕ) of a system : -8 kJ

<h3>Further explanation  </h3>

The laws of thermodynamics 1 state that: energy can be changed but cannot be destroyed or created  

The equation is:  

 \tt \Delta U=Q+W

Energy owned by the system is expressed as internal energy (U)  

This internal energy can change if it absorbs heat Q (U> 0), or releases heat (U <0). Or the internal energy can change if the system does work or accepts work (W)  

The sign rules for heat and work are set as follows:  

• The system receives heat, Q +  

• The system releases heat, Q -  

• The system does work, W -  

• the system accepts work, W +  

5 kJ of work is done on the system : W = +5 kJ

releases 13 kJ of energy to the surroundings : Q = -13 kJ

\tt \Delta E=-13+5=-8~kJ

6 0
3 years ago
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