Beth2516
contestada

Which change results in a release of energy?
1. The melting of H₂O(S)
2. The boiling of water(L)
3. The evaporation of H₂0 (L)
4. The condensation of H₂0(G)

Respuesta :

The answer to this question would be: 
4. The condensation of H₂0(G)
The reaction that release heat/energy is called exothermic. Melting H2O mean you change the form from solid(ice) into liquid(water). To melt ice you need to heat it, that makes it endothermic since it absorbs heat, not produce it. 
Boiling water is the same, you need heat to do that. Evaporating H2O also need heat like boiling. 
In condensation, the vapor(gas) becomes liquid. It was the opposite of evaporating. In this reaction, you need to cool the vapor. Cooling the vapor is same as the vapor release energy to surrounding, which makes it exothermic.
soneyedesola44

The change that results in a release of energy is the condensation of H₂0 (G). The correct answer is 4.

Exothermic reaction refers to a chemical reaction in which energy is released in a form of light or heat

Further Explanation

Condensation is certainly one of the phases changes in which heat energy is released. When gas is transformed into a liquid, the amount of the energy involved in the conversion of chemical to heat is known as the heat of vaporization.

The melting of H20(S) is not correct because Melting H20 will imply changing its form, from solid to liquid. However, heat has to be applied to the solid (ice) to melt, which would then be an endothermic reaction because the ice does not produce heat but only absorbed it.

The boiling of water (L) is not correct because heat is also required to boil water and not absorbed it.

The evaporation of H20 is also not correct because it also requires heat just like the case of boiling of water.

In the condensation of H20, the gas will transform into liquid. In this reaction, we have to cool the vapor and during the cooling, energy is released to the surrounding. This chemical reaction is called an exothermic reaction.

LEARN MORE:

  • Which phase change results in the release of energy  https://brainly.com/question/312987
  • Which phase change results in a release of energy  https://brainly.com/question/12728327

KEYWORDS:

  • condensation
  • melting
  • boiling
  • evaporation
  • gas
  • liquid

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