An initial mixture of nitrogen gas and hydrogen gas is reacted in a rigid container at a certain temperature by the reaction

3H2(g) +N2(g) <=> 2NH3(g)

At equilibrium the concentrations are [H2]=5.0 M, [N2]= 8.0M, [NH3]=3.0M

What were the concentrations of nitrogen gas and hydrogen gas that were reacted initially.

Concentrations of nitrogen gas and hydrogen gas that were reacted initially were 6.5 M and 0.5 respectively

Explanation:

Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.

at t= 0       x      y              0

tt t= eqm    (x-3z)   (y-z)      2z

2z = 3.0 M

z= 1.5 M

Initial concentration of =

Initial concentration of =

Thus concentrations of nitrogen gas and hydrogen gas that were reacted initially were 6.5 M and 0.5 respectively

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.