A 13.5 g sample of gold is heated, then placed in a calorimeter containing water. If the water absorbs 251 J of heat, what was the change in temperature of the gold metal sample? The specific
heat of gold is 0.130 J/gºC.

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.