Hi. I am having a hard to understanding chemistry. currently the problem I'm working on is C2H4+3O2=2CO2+2H20. I need to know the total and exothermic/ endothermic.​

So what you would do is go through and add 3 teaspoons(tsp) 6 times because of the 6 tablespoons(tbsp). which will give you an answer of 18. another way is to multiply 3x6=18.

Fake and a real . . . . . ..

Is there a c and d?

Six base units were recommended: the metre, kilogram,second, ampere, degree kelvin (later renamed kelvin), and candela. in 1960, the 11th  cgpm  named the system the international system of units, abbreviated si from the french name, le système international  d'unités.