<u>Answer:</u> The solubility of oxygen at 682 torr is 
<u>Explanation:</u>
To calculate the molar solubility, we use the equation given by Henry's law, which is:

Or,

where,
 are the initial concentration and partial pressure of oxygen gas
 are the initial concentration and partial pressure of oxygen gas
 are the final concentration and partial pressure of oxygen gas
 are the final concentration and partial pressure of oxygen gas
We are given:
Conversion factor used:  1 atm = 760 torr

Putting values in above equation, we get:

Hence, the solubility of oxygen gas at 628 torr is 
 
        
             
        
        
        
Answer:
C. The Speed of the ball depends on the force used to kick it.
Explanation:
 
        
                    
             
        
        
        
D. microwaves, Ultraviolet, x-rays
        
                    
             
        
        
        
Answer:
151.63 g
Explanation:
We first get the number of moles;
Moles = Molarity × volume
           = 2.0 × 0.475 
           = 0.95 moles
1 mole of CuSO4 = 159.609 g/mol
Therefore;
Mass = moles × molar mas
          = 0.95 moles × 159.609 g/mol
          = 151.63 g