In our example, where propane and oxygen were the reactants, and water and carbon dioxide were the products, which one of the following would be the limiting reactant if we used 10 grams of propane and 30 grams of oxygen? 1. The oxygen
2. In this chemical reaction, there is no limiting reactant.
3. The propane
4. The carbon dioxide

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.  

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