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xz_007 [3.2K]
3 years ago
13

The process of evaporation describes which of the following changes of state?

Chemistry
1 answer:
Anna35 [415]3 years ago
6 0
The change in state from Liquid ➡ gas describes the process of evaporation.
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Write the balanced equation for the oxidation of iron to iron (III) oxide. Will mark brainlest answer
Butoxors [25]

Start with the unbalanced chemical equation

<span>Fe(s)+O2(g)→Fe2O3(s)</span>

The idea behind balancing chemical equations is that the number of atoms an element has on the reactants' side must be equal to the number of atoms it has on the products' side.

These atoms will become a part of different compounds once the reaction is completed, but they must always be in equal numbers on both sides.

So, look at iron first. One atom reacts, but two are produced - notice the 2 subscript iron has in Fe2O3. This means you must double the number of atoms on the reactants' side to reach an equality.2

<span>Fe(s)+<span>O2(g)</span>→Fe2<span>O3(s)</span></span>

Now look at oxygen. Two atoms react, but three are produced. The trick here is to find a common multiple that will make the number of atoms equal on both sides.

The easiest way to do this is to multiply the atoms that react by 3, which will give you 6 oxygen atoms that react, and the atoms that are produced by 2 - this will get you 6 oxygen atoms produced.

<span>2Fe(s)+3<span>O2(g)</span>→2Fe2<span>O3(s)</span></span>

However, notice that the iron atoms are unbalanced again. You have 2 that react, but 4 that are produced → multiply the atoms that react by 2 again, which will give you

4<span>F<span>e<span>(s)</span></span>+3</span><span><span>O<span>2(g)</span></span>→2</span><span>F<span>e2</span><span>O<span>3<span>(s</span><span>

</span></span></span></span>

5 0
3 years ago
What is the chemical symbol for the starting substance 2nacl+2h2o-&gt;2naOH+cl2+h2
ruslelena [56]
He symbol "=" is used to 
<span>starting substance </span>
6 0
3 years ago
Sodium chloride or table salt is a compound formed when sodium loses its valence electron to chlorine. Which type of bond format
avanturin [10]

When Sodium chloride or table salt is a compound formed when sodium loses its valence electron to chlorine, the type of bond formation that takes place in sodium chloride is the Lewis Bond.

8 0
2 years ago
Read 2 more answers
How many moles of AIC3 are there in 1,119.972 g ?
Alchen [17]

Answer:

it is 8.40189 moles of AlCl3

mole = mass/molar mass

mole= 1119.972/133.34

6 0
3 years ago
What can lead to being curious and also lead to fascinating scientific investigations? a. Questions b. Answers c. Qualitative Me
Ira Lisetskai [31]

Answer:

Questions

Explanation:

The word "science" was obtained from the Latin word "Scire" which means "to know". Hence science is a systematic investigation into the nature of the universe.

Scientific investigations begin with asking questions about the universe. It is this curiosity to know about occurrences in the universe as well as how to solve problems in the universe that leads to fascinating scientific investigations and discoveries.

8 0
3 years ago
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