Question

Answer 1

Answer 2

\(4K+O_2\rightarrow2K_2O\\ CH_4+2O_2\rightarrow CO_2+2H_2O\\ 3Fe+2O_2\rightarrow Fe_3O_4\\ 4P+5O_2\rightarrow2P_2O_5\)

Answer 3

a)4 K+O₂-to>2K₂O

b)CH₄+2O₂-to>CO₂+2H₂O

c)3Fe+2O₂-to>Fe₃O₄

d) 4P+5O₂-to>2P₂O₅

Answer 4

\(4K+O_2\underrightarrow{t^o}2K2O\)

\(CH_4+2O_2\underrightarrow{t^o}2H_2O+CO_2\)

\(Fe+O_2\underrightarrow{t^o}Fe_2O_3\) hoặc \(Fe+O_2\underrightarrow{t^o}FeO\)

\(4P+5O_2\underrightarrow{t^o}2P_2O_5\)