Answer:
25.7 kJ/mol
Explanation:
There are two heats involved.
heat of solution of NH₄NO₃ + heat from water = 0
q₁  +  q₂  =  0
n  =  moles of NH₄NO₃  =  8.00 g NH₄NO₃  ×  1 mol NH₄NO₃/80.0 g NH₄NO₃           
 ∴ n =   0.100 mol NH₄NO₃
q₁ = n * ΔHsoln = 0.100 mol * ΔHsoln
m  =  mass of solution  =  1000.0 g + 8.00 g  =  1008.0 g
q₂  =  mcΔT  = 58.0 g  ×  4.184 J°C⁻¹  g⁻¹  × ((20.39-21)°C) = -2570.19 J
q₁  +  q₂  =  0.100 mol  ×ΔHsoln  – 2570.19 J  =  0
ΔHsoln  =  +2570.19 J  /0.100 mol  =  +25702 J/mol  =  +25.7 kJ/mol
 
        
             
        
        
        
Answer:  for the reaction is 5.55
 for the reaction is 5.55
Explanation:
Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.
The given balanced equilibrium reaction is,
                          
          
At eqm. conc.   (0.010) M     (0.15)  M   (0.37) M
The expression for equilibrium constant for this reaction will be,
![K_c=\frac{[Cl_2]\times [PCl_3]}{[PCl_5]}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%5BCl_2%5D%5Ctimes%20%5BPCl_3%5D%7D%7B%5BPCl_5%5D%7D)
Now put all the given values in this expression, we get :


Thus the  for the reaction is 5.55
 for the reaction is 5.55
 
        
             
        
        
        
It usually holds more water because of evaporation and makes the earth very hot.
        
             
        
        
        
B. meiosis is the process of cell division that creates sex cells in a reproducing organism.
        
             
        
        
        
Because of Bronze's high...... what?