C2h4(g) + h2(g) mc009-1.jpg c2h6(g) + 137 kj what happens to the amount of ethane (c2h6) when the temperature of the system is increased? the amount of ethane decreases. the amount of ethane increases initially and then decreases. the amount of ethane increases. the amount of ethane decreases initially and then increases.

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.  

c. 4.54 x 10–12 j happens to be correct