Which type of chemical reaction occurs in c6h12 + 9o2 = 6co2 + 6h2o?
a) synthesis
b) combustion
c) single replacement
d) double replacement

Answer is: B) combustion.

Balanced chemical reaction: C₆H₁₂ + 9O₂ → 6CO₂ + 6H₂O.

1) Synthesis is reaction of two or more substances combining to make a more complex substance.

2) Combustion is reaction with oxygen.

3) Single Displacement is reaction where  neutral element metal or nonmetal become an ion as it replaces another ion in a compound.  

4) Double displacement reactions (more reactive metals displace metals with lower reactivity).

i don,t know so just answer mine