Derive the henders on- hasselbalch equation for the acid ioniza tion of a weak acid ha and use this equation to construct a concentration ph profile for the essential amino acid phenyla lanine, the structure of which is given below. the following are relevant pka and pi values: pkaj 2.58; pka 9.24; pi 5.48. in all cases clearly identify and label the structures involved in each acid ioniza tion step. (12 ma versus

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.