D is the answer. Just look at the picture on your test ❤
Answer : The value of
across the membrane is 6.80 kJ/mol
Explanation :
The relation between the equilibrium constant and standard Gibbs free energy is:

where,
= standard Gibbs free energy = ?
R = gas constant = 8.314 J/K.mol
T = temperature = 
= equilibrium constant
= concentration inside the cell = 
= concentration outside the cell = 
Now put all the given values in the above formula, we get:



Thus, the value of
across the membrane is 6.80 kJ/mol
<span>Answer 2 (2.0L of Cl2 (g)) is correct. Avogadro's hypothesis states that 2.0 L of Cl2 (g) occupies the same volume as 2.0 L of CO2</span>
All you need to do the cross the charges and put it as suffixes.
D+2 + E-1 ----> DE2
answer is C