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Sindrei [870]
4 years ago
7

Quem criou a teoria do átomo

Chemistry
1 answer:
denis-greek [22]4 years ago
3 0
<span>El atomismo surgió en la antigua Grecia con Leucipo y Demócrito</span>
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In lab, a student observes an unknown substance dissolve in water and its mass remains the same. Which law is the student thinki
balu736 [363]

The law which this student is thinking of is the law of conservation of mass (LOCOM).

<h3>What is LOCOM?</h3>

LOCOM is an abbreviation for the law of conservation of mass and it states that mass is neither created nor destroyed in any chemical reaction.

This ultimately implies that, the mass of any substance in a balanced chemical equation or chemical reaction would remain the same at the end.

According to the law of conservation of mass (LOCOM), the mass of all the reacting chemical elements of any substance must be equal (remain the same) to the mass of the product formed during a chemical reaction.

Read more on LOCOM here: brainly.com/question/24783543

3 0
3 years ago
The Law of Conservation of
tankabanditka [31]

Answer:

True.

Explanation:

Hello!

In this case, since the law of conservation of mass and energy states that both mass and energy cannot be neither created nor destroyed, if we want to analyze it in a chemical reaction, it is necessary to realize that the initial reactants are composed by a specific amount of atoms of each element and therefore the products must have that equal amount. For instance, going over the formation of water from hydrogen and oxygen:

H_2+O_2\rightarrow H_2O

We can see hydrogen are equal at both sides whereas oxygen do not; that is why we balance it by putting a coefficient of 2 just before hydrogen and water in order to equal the new 4 atoms of H and 2 atoms of O at each side.

2H_2+O_2\rightarrow 2H_2O

That is why this statement is true.

6 0
3 years ago
How many shared electrons are in the lewis structure of h2o2
docker41 [41]

Answer:

4 shared electrons

Explanation:

There are 4 shared electrons in the lewis structure of h2o2.

7 0
2 years ago
Which of the following elements have the highest percentage in terms of frequency in the Earth's crust and human body, respectiv
Likurg_2 [28]

Answer:

Oxygen is the most abundant element in the Earth's crust.

Explaination: It makes up 46% of the mass of the Earths crust.

3 0
3 years ago
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Why does analyzing character motivation matter?
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It propels the plot.
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