Hello, I would like to help you, but I really don't understand the question
 
        
             
        
        
        
Lambda = h\ Mv
lambda = 6.624 x 10^-34 / 9.1 x 10^-31 x 2.5 x 10^7
lambda = 2.9 x 10^-11 is your wavelength
        
             
        
        
        
Answer:
The concentration of chloride ion is 
Explanation:
We know that 1 ppm is equal to 1 mg/L.
So, the  content 100 ppm suggests the presence of 100 mg of
 content 100 ppm suggests the presence of 100 mg of  in 1 L of solution.
 in 1 L of solution.
The molar mass of  is equal to the molar mass of Cl atom as the mass of the excess electron in
 is equal to the molar mass of Cl atom as the mass of the excess electron in  is negligible as compared to the mass of Cl atom.
 is negligible as compared to the mass of Cl atom.
So, the molar mass of  is 35.453 g/mol.
 is 35.453 g/mol.
Number of moles = (Mass)/(Molar mass)
Hence, the number of moles (N) of  present in 100 mg (0.100 g) of
 present in 100 mg (0.100 g) of  is calculated as shown below:
 is calculated as shown below:

So, there is  of
 of  present in 1 L of solution.
 present in 1 L of solution.
 
        
             
        
        
        
Answer:
H_2O + 2CrO_4^2- + 3SO_3^2- -> 3SO_3^2- + 2CrO_2^- + 2OH^-
Explanation:
Reduction half reaction
2H_2O + CrO_4^2- + 3e -> CrO_2^- + 4OH^-
Oxidation half reaction
2OH^- + SO_3^2- -> SO_4^2- + H_2O + 2e
Balanced overall equation
H_2O + 2CrO_4^2- + 3SO_3^2- -> 3SO_3^2- + 2CrO_2^- + 2OH^-
 
 
        
             
        
        
        
(D) At equilibrium, the concentration of the products will be much higher than the concentration of the reactants.