A.)the equilibrium constant, kp, for the following reaction is 0.110 at 298 k:
nh4hs(s) nh3(g) + h2s(g)
calculate the equilibrium partial pressure of h2s when 0.371 moles of nh4hs(s) is introduced into a 1.00 l vessel at 298 k.
ph2s = ? ? atm
b.) the equilibrium constant, kp, for the following reaction is 0.497 at 500 k:
pcl5(g) pcl3(g) + cl2(g)
calculate the equilibrium partial pressures of all species when pcl5(g) is introduced into an evacuated flask at a pressure of 1.47 atm at 500 k .
ppcl5 = ? ? atm
ppcl3 = ? ? atm
pcl2 = ? ? atm

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).

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.