The  energy of photon in kJ/mol is 329kJ/mol.
Wavelength of radiation is 370nm. The frequency of given wavelength is
             ν = c / λ
             ν = 3×10^8 / 370×10^-9
             ν = 8.11 × 10^14 s^-1
       Now the energy of photon is: 
              E = hν
              E = 6.63×10^-34  J.s/photon × 8.11×10^14s^-1
              E = 5.41× 10^-19  J/photon
          To find in mole
               E = 5.41× 10^-19 × 6.022×10^23 
                E = 3.29 ×10^ 5 J/mol
    So, the energy of mole of photon is equal to 329 kJ/mol.
         Learn more about radiation here:
                 brainly.com/question/18650102
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The normal force is always perpendicular to the surface. So it would be straight to the left of the wall
        
             
        
        
        
Answer:The disturbance created by a source of sound in the medium travels through the medium and not the particles of the medium
Explanation:i hope this is right
 
        
             
        
        
        
Principle: Pythagorean theorem
Given:
Let a = boat velocity = 25 miles per hour
      b = river velocity = 10 miles per hour
Required: c = actual velocity
Solution:
     
     c^2 = a^2 + b^2
     c^2 = (25)^2 + (10)^2
     c^2 = 725
     (c^2)^0.5 = (725)^0.5
      c = 26.93 miles per hour
<em>ANSWER: Actual boat velocity is 26.93 miles per hour</em>