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Sergio039 [100]
3 years ago
14

What must models and theories do in order to remain valid

Chemistry
1 answer:
raketka [301]3 years ago
5 0
There must not be credible contrary evidence to the ideas suggested by the theory.
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Mg + 2H2O -----&gt; Mg (OH)2 + H2<br><br><br> Write it in word problem
diamong [38]

The word problem format to the task given above is: When magnesium reacts with steam, it produces magnesium hydroxide and liberate hydrogen gas.

<h3>How magnesium hydroxide is formed?</h3>

It happens that magnesium is an alkali earth metal and react with water in the gaseous state to librate hydrogen gas, when this reaction occurs, it results in the formation of magnesium hydroxide.

The chemical equation between magnesium and water is given below:

Mg + 2H₂O -----> Mg (OH)₂ + H₂

So therefore, we can accurately deduced that magnesium hydroxide is produced when magnesium is disolved in water.

Read more on word problem:

brainly.com/question/13818690

#SPJ1

3 0
1 year ago
Explain why a climax community is not always a forest.
kaheart [24]
They are all in forest climax means forest
4 0
3 years ago
If you put a fish in a cup of chocolate milk and it dies, does that mean it drowned ?
Bingel [31]
No it means that the liquid is way different then water<span />
8 0
3 years ago
Read 2 more answers
A dependent variable is
Anuta_ua [19.1K]

Answer:

a variable (often denoted by y) whose value depends of that of another.

Explanation:

on g00gle duhh just look it up. :)

7 0
2 years ago
Identify the missing coefficient in the balanced equation and classify the type of reaction. C2H5OH + 3O2 ⟶ _____CO2 + 3H2O 2; N
scoray [572]

Answer:

C2H5OH(l) +3O2(g) → 2CO2(g) + 2H2O(l)

it is combustion reaction and heat is also produced.

Explanation:

This is oxidation reduction reaction which is also called redox reaction.

C2H5OH  is reducing agent while O2 is oxidizing agent.

Chemical equation:

C2H5OH + O2 → CO2 + H2O

Now we will balance the equation. In given chemical equation two carbon atoms on the left side and one carbon atom on the right side. While six hydrogen atoms are present on the left and just two hydrogen on right side. We will write coefficient two with carbon dioxide and and three with water molecules.

C2H5OH + O2 → 2CO2 + 3H2O

now we will balance the oxygen atoms. we can see there are three oxygen atoms on the left and seven on right side. we will write coefficient three with oxygen on left and equation becomes balance.

C2H5OH + 3O2 → 2CO2 + 3H2O

Complete chemical equation with physical states:

C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l)

4 0
3 years ago
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