Answer:
Wavelength of the photon depends on transition from different states.
Explanation:
The wavelength of the photon that is emitted from the atom during the transition depends on the transition from different states. If the photon is emitted from n=4 state to n=3 state, the wavelength of photon is 1875 while on the other hand, if the photon is emitted from n=5 state to n=3 state, the wavelength of photon is 1282. If the photon is emitted from n=3 state to n=2 state, the wavelength of photon is 656.
 
        
             
        
        
        
Answer:
The concentration of helium in the water is 2.405×10^-4 M
Explanation:
Concentration = Henry's law constant × partial pressure of helium
Henry's law constant = 3.7×10^-4 M/atm
Partial pressure of helium = 0.65 atm
Concentration = 3.7×10^-4 × 0.65 = 2.405×10^-4 M
 
        
             
        
        
        
Answer: Measure 114 mL of the 1.75 M solution, and dilute it to 2.00 L.
Explanation: 
The number of moles in the solution will remain same on dilution and thus according to Molarity Equation:

 = molarity of first solution
= molarity of first solution
 = Volume of first solution
= Volume of first solution
 = molarity of second solution
= molarity of second solution
 = Volume of second solution
= Volume of second solution


Thus 114 ml of 1.75 M solution is taken and the volume is diluted to 2.0 L to make 0.100 M solution.
 
        
                    
             
        
        
        
The answer to this would be d. Precipitation patterns .
        
                    
             
        
        
        
The solutions vapor pressure would be lower.