Answer: Energy of reactants = 30, Energy of products = 10
Exothermic
Activation energy for forward reaction is 10.
Explanation:
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and  for the reaction comes out to be negative.
 for the reaction comes out to be negative.
Energy of reactants = 30 
Energy of products = 10
Thus as energy of the product < energy of the reactant, the reaction is exothermic.
Activation energy  is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.
 is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.
 for forward reaction is (40-30) = 10.
 for forward reaction is (40-30) = 10.
 
        
             
        
        
        
Answer:
V = 42.6 L
Explanation:
Given data:
Number of moles of Cl₂ = 1.9 mol
Temperature and pressure = standard
Volume occupy = ?
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K  
T = temperature in kelvin
By putting values,
1 atm ×  V = 1.9 mol ×0.0821 atm.L /mol.K × 273.15 k
V = 42.6  atm.L / 1 atm
V = 42.6 L
 
        
             
        
        
        
2nd one bhutdsaadxjytwwdghurfc
        
             
        
        
        
Answer:
its shorter than a regular one 
Explanation:
the only reason is simply because it is shorter 
 
        
             
        
        
        
Answer:
              Identical
Explanation:
                    Both compounds are identical. If you rotate the compound on the left 60 degree anticlockwise you will get the compound on the right.
                    These are not isomers of each other because they have same structural and molecular formulas.
                    Also, they are related to each other because they are the same