Question

ajutatima varog frumos la ex pliz     

alege coeficienti in urmatoarele ecuati chimice
a) CH4+O2-->CO2+H2O+Q  
b)C2H6+O2--->CO2+H2O+Q
c) KCIO3--->KCI+O2 
d) P+O2-->P2O5
E)SO2+O2-->SO3
F)H2O2-->H2O+O2

Answer 1

CH4+1/2O2-->CO2+2H2O+Q 
C2H6+1/2O2--->CO2+3H2O+Q
KCIO3--->KCI+1/2O2 
4P+5O2-->2P2O5
2SO2+O2-->2SO3 
H2O2-->H2O+1/2O2