Which reaction is endothermic?
ohci + naoh - nacl + h2o + 58 kj
| 6co2 + 12h20 + energy -> cgh12o6 + 602 + 6h20
2na + cl2 → 2nacl + energy
2c2h6 + 702 -> 4co2 + 6h20 + 2,502 kj

6CO2+12H2O+energy = C6H12O6+6O2+6H2O this reaction is an endothermic reaction.

Explanation:

Endothermic reaction is a specific type of reaction that consume energy in form of heat.In simple words the chemical or biochemical reaction that requires energy from outside is called endothermic reaction.

     6CO2+12H2O+energy  =  C6H12O6+6O2+6H2O

This the only reaction among the 4 reactions mentioned in the question, requires energy.From that point of view it can be stated that the above reaction is an endothermic reaction.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .

i don,t know so just answer mine