The answer is 18 you multiply wavelength (6) times frequency (3)
        
                    
             
        
        
        
Heat of vaporization of water will be required as water is already at it's boiling point thus heat required will be 540*10=5400 cal
        
             
        
        
        
Answer:
Explanation:
Standard enthalpy of combustion (ΔH∘C) is the enthalpy change when 1 mole of a substance burns under standard state conditions;