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sesenic [268]
1 year ago
8

21. Apply Concepts Classify each reaction and balance the

Chemistry
1 answer:
adell [148]1 year ago
4 0

The reactions are in order which includes combustion reaction, Hydration reaction, oxidation reaction, and displacement reaction.

a) A combustion reaction is a chemical reaction between a fuel and an oxidant where heat is released. The combustion reaction example is given below. It is a balanced chemical reaction.

2C₃H₆(g) + 9O₂(g) --------> 6CO₂(g) + 6H₂O(g)

b. A hydration reaction is a chemical reaction in which a molecule of water is added to another molecule. Here Aluminum oxide is added to water to form aluminum hydroxide.

4Al₂O3(s) + 6H₂O(l)------> 2Al(OH)3(s)

c. When a metal reacts with oxygen, the metal forms an oxide. Oxide is a compound of metal and oxygen. Here lithium metal reacts with oxygen to form lithium oxide.

2Li(s) + O₂(g)-----> Li₂O(s)

d. A displacement reaction is one in which a more reactive element displaces a less reactive element from a compound. Here Zinc is more reactive than silver, so silver was displaced to form Zinc Nitrate.

Zn(s) + 2AgNO₃(aq) -----> 2Ag(s) + Zn(NO₃)₂(aq)

To know more about reactions, click below:

brainly.com/question/11231920

         

#SPJ1

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!!!!!!!!!!! I will mark as brilliant
Vika [28.1K]

Answer:

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The nucleus is dense and takes up very little space within the atom. All protons have a <em><u>positive</u></em><em><u> </u></em>charge and have a mass of about 1 amu. All neutrons have no charge or are <em><u>neutral</u></em> and have a mass of about 1 amu.

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4 0
3 years ago
The strongest light left over from the big bang is called background radiation and was given off as which type of wave?
Sonja [21]
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8 0
3 years ago
We expect the enthalpy of cumbustion of two isomers to be _________. The molecular formulas of two molecules are _____, so the b
Alex777 [14]

Answer:

We expect the enthalpies of combustion of two isomers to be different.

The molecular formular of the two molecules are very similar.

So the balanced chemical equation for the two combustion reactions are the same.

Explanation:

In calculation of the combustion enthalpiesfrom the isomers of the products and reactant.

The difference will be in the standard enthalpies of formation of the two combustion products.

The rod-shaped n- octane has vibrational and rotational motion possible more than the almost spherical neoprene.

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