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kaheart [24]
4 years ago
6

Fireworks are chemical reactions that release energy. Which of these phenomena are caused by chemical reactions that release ene

rgy? If you’re not sure, make a guess. Muscles work to perform a task. Fuel burns and heats the surroundings. A battery supplies current to a device. A car's air bag expands by igniting a chemical.
Chemistry
2 answers:
Gemiola [76]4 years ago
6 0

All the answers are correct.

Annette [7]4 years ago
4 0
I think it is either the second or third one.
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34kurt

Answer:

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3 years ago
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All of the acid molecules in beaker 1 dissociate fully and exist as and ions. As a result, beaker 1 represents a strong acid solution. The majority of the molecules in beaker 2 are undissociated.
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3 years ago
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3 years ago
An 8.5g Ice Cube is placed into 255g water.
Troyanec [42]
LAw of conservation of Energy is an important concept to solve this problem. The energy released is equal to the energy absorbed. 
Ice undergoes latent heat. MEaning there is a change in phase but not temperature and the energy is solved by (enthalpy of fusion)(mass) = 333.5J/g)(8.5g). =2834.75J. 
This is equal to the energy released by the water. The energy is computed by (mass)(specific heat of water)(temperature change) = (255g)(4.16J/gK)(T)

Final equation is: 
2834.75 = 255(4.16)(T) 
T = 2.67K
7 0
3 years ago
Read 2 more answers
I need somebody to help me with my homework pls i dont get it .
zubka84 [21]
26. B
27. D
28. C
Hope this helped ☺️
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4 years ago
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