Respuesta :

mali466454

Answer:

The standard enthalpy of formation is the energy that would be involved if one mole of the substance were to be formed from its elements that were at standard conditions of temperature and pressure which are 25 degrees C and one atm pressure.

Step-by-step explanation:
The answer is 32 you have to times them all together so 2x2=4 4x2=8 8x2=16 and then lastly 16x2=32 then as you can see you have used all 5 2s

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