The table shows four reactions Which of the following is an example of a combustion and also a synthesis reaction

A. 1
B. 2
C. 3
D. 4

The gas would begin to expand, and eventually the can would burst or explode.

Ithink is a because if say increased in electronegativity

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

Molarity is moles of solute over liters of solution. idk if that is what you are talking about, but you can convert moles of solute to grams of solute using dimensional analyzes by using molar mass found on the periodic table.