An element consists of two isotopes. One isotope has an atomic mass of 105.9041 amu and has a relative abundance of 71.82%. The other isotope has an atomic mass of 107.9047 amu and has a relative abundance of 28.18%. Based on this, what is the atomic mass of the element?

the right answer is c i just did the question.

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.  

5.6⋅10−^19  j

do you need the explaination?