Final answer:
To compute the diffusion flux of hydrogen through a membrane, Fick's first law is used, requiring details such as the membrane area, the hydrogen concentration gradient, and the membrane's permeability.
Step-by-step explanation:
To calculate the diffusion flux through a membrane when hydrogen pressure on one side is 0.15 MPa, additional information is needed, such as the area of the membrane, the difference in hydrogen concentration on both sides of the membrane, and the membrane's permeability to hydrogen. Without these details, the question cannot be answered precisely. In the context of this question, Fick's first law of diffusion is often used, which states that the diffusion flux is proportional to the concentration gradient across the membrane. Typically, the formula is J = -D*(dC/dx), where J is the diffusion flux, D is the diffusion coefficient, and dC/dx is the concentration gradient.