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k0ka [10]
2 years ago
14

Identify the following reactions as combination, decomposition, or combustion reactions

Chemistry
1 answer:
kkurt [141]2 years ago
7 0

Answer:

1. combustion

2. decomposition

3. decomposition

4. combination

5. decomposition

6. decomposition

Explanation:

combination of a reaction is when 2 more or elements/ compounds combine to form a compound. example: (A+B→AB)

decomposition of a reaction is when a chemical breakdown. example: (AB→A+B)

a combustion reaction is when an element/ compound reacts with oxygen to form the product of water and carbon dioxide.

example: ( C_{x} H_{y} + O_{2} → H_{2}O + CO_{2} )

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How many moles of co2 are produced when 5.40 mol of ethane are burned in an excess of oxygen?
Nimfa-mama [501]
<span>Reaction of ethane combustion:

2C2H6 (g) + 7O2 (g) ----> 4CO2 (g) + 6H2O 

According to the reaction, we can see that </span>C2H6 and CO2 have following stoichiometric ratio: 

n(C2H6) : n(CO2) = 2 : 4

If we know the number of moles of ethane we can calculate moles of carbon dioxide:

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4 years ago
How are reactants converted to products in an elementary reaction?
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Answer:

Atomos, molecules, ions or radicals.

Explanation:

An elementary reaction always formed by chemical species, i mean atomos, molecules, ions or radicals.

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3 years ago
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Help science worth 50 points
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I think this is like a game in which you need dice.

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