Describe the process of making a sandwich as if it were a chemical reaction with reactants and products. Describe how molar ratios of reactants and products relate to the sandwich analogy. If you doubled the amount of bread you had available, how much of the other ingredients would be needed to make your sandwiches?

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.