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Ede4ka [16]
3 years ago
6

Can someone help me with this one?

Chemistry
1 answer:
lana [24]3 years ago
8 0

Your answer will be A

~Onyx~

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Which event is an example of an exothermic reaction?(1 point)
oksian1 [2.3K]

Combustion is a type of exothermic chemical reaction that generates light and heat in most cases, and occurs fairly quickly.

<h3>What is an exothermic reaction?</h3>

An exothermic reaction is one that when it occurs releases energy in the form of heat or light to the environment.

<h3>Characteristics of an exothermic reaction</h3>

  • When this type of reaction occurs, the products obtained have lower energy than the initial reactants.

  • Most of the exothermic reactions are oxidation, and when they are very violent they can generate fire, as in combustion.

  • Combustion is a very fast oxidation reaction that occurs between materials called fuels and oxygen.

Therefore, we can conclude that combustion is an example of an exothermic reaction that releases large amounts of heat, which can lead to fire.

Learn more about an exothermic reaction here: brainly.com/question/14969584

4 0
2 years ago
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A sample of Ac-255 originally contained 8.0g. After 720 hours, how much of the original Ac-255 remains? The half-life of the iso
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Answer:

disculpa solo quiero unos puntos responda para ganar sin embargo quiero subir un poco de mis puntos disculpa bro cuidate

7 0
3 years ago
calculate how many Liters of 0.50 M silver nitrate solution you will need to provide the 2.4x10^-3 moles of silver nitrate
wlad13 [49]

Answer:

4.8x10⁻³ Liters are required

Explanation:

Molarity is an unit of concentration in chemistry defined as the ratio between moles of solute (In this case, silver nitrate) and liters of solution.

The 0.50M solution contains 0.50 moles of silver nitrate per liter of solution.

To provide 2.4x10⁻³ moles Silver nitrate are required:

2.4x10⁻³ moles * (1L / 0.50 moles) =

<h3>4.8x10⁻³ Liters are required</h3>
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3 years ago
How do you get matter from food?
IrinaK [193]

Answer:

mark brainliest :)

Explanation:

Animals have to eat other living things to get their food, but plants can produce their own food. Plants absorb sunlight and use that energy to make glucose from carbon dioxide and water during the process of photosynthesis; glucose is the food plants can use as a source of energy or matter for growth

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4 years ago
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Explain why sharpening a pencil is a different type of physical change it freezing water to make ice cubes
laila [671]
Because you can't make the pencil go back to normal form
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