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


C7H8 + 9O2 → 7CO2 + 4H2O ______________

2NaHCO3 → Na2CO3 + H2O + CO2 ___________

CH4 → C + 2H2O ________________

P4O10 + 6H2O → 4H3PO4 ______________

FeSO4 → FeO + SO3 _______________

CaCO3(s) → CO2(g) + CaO(s) _________________

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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: ( [tex]C_{x}[/tex] [tex]H_{y}[/tex] + [tex]O_{2}[/tex] → [tex]H_{2}[/tex]O + [tex]CO_{2}[/tex] )

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