U.S. annexation of Border disputes
between the United
States and Mexico
U.S.-Mexican War
?
16. Which of these best completes the diagram?
A
B
С
D
E
(a) California
(b) Nevada
(c) Texas
(d) Florida

The answer is C. Texas

What we need to know is the molarity of all the particles of NaCl taking into account that NaCl = Na+ + Cl- and the ones of taking into account that MgSO4=Mg+2 + SO4-2. we are going to use a formula to get the molarity like this: M = 2(0.227 M) + 2(0.078 M) 
        M = 0.61 M 
After that to get the atm we do it like this:
Π = (0.61 M)(0.08206 atm-L/mol-K)(25 + 273 K) 
Π = 14.9 atm  
and then we do this multyplication
(14.9 atm)(101.3 kPa/atm) = 1509.37 kPa