Hydrazine can be used as a rocket fuel. A 6.4 g sample of hydrazine is found to contain 5.6 g of nitrogen and 0.80 g of hydrogen. The molar mass of hydrazine is
the same as that of oxygen gas. Determine the empirical formula and the
molecular formula of this compound. (show work; use labels)

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

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.