In which reaction is there a transformation of mass into energy? For A P E X
A. Two hydrogen atom fuse to form a helium atom

B. Ammonium nitrate breaks down into dinitrogen monoxide and water

C. Calcium oxide combines with water to form calcium hydroxide

D. Sodium combines with chlorine to form sodium chloride

Respuesta :

This is called
Nuclear fusion
Example is two hydrogen atoms fuse to form a helium atom
Where some of the atoms of hydrogen turn in to energy
So the answer is A

Answer:

A, person above me correct

Explanation: