For this problem we use the wave equation. It is expressed as the speed (c) is equal to the product of frequency (f) and wavelength (v).
c = v x f
We know the wavelength of the an red light which is 6.5 x 10^-7 m. Now, we solve for the wavelength of the unknown wave to see the relation between the two waves.
2.998 X 10^8 = 5.3 X 10^15 X v
v = 2.998 X 10^8 / (5.3 X 10^15) = 5.657 X 10^-8 m 
Therefore, the wavelength of the unknown wave is less than the wavelength of the red light.
        
             
        
        
        
N is as electronegative as Cl is. So Cl doesnt react with O, N
        
             
        
        
        
Answer:
your answer should be the bottom
sorry if im wrong
Explanation:
 
        
             
        
        
        
AgNO3 ( aq ) + NaI ( aq ) = NaNO3 ( aq ) + AgI ( s ) .
 
        
             
        
        
        
Answer: 2 atoms
Explanation: 2 in Co2 means 2 atoms