1. (1 pt) Multiple-choice Questions

A. In a system consisting of species A and B, for which condition are N₁ and J₁ equal or nearly equal?

a When N= N

b. When Ng=-N₁

c. When N * 0, and species A is very dilute (x<<1)

d. When (b) or (c) is true

B. For flow of a cool fluid through a tube with hot walls, would decreasing the flow rate of the fluid though

the tube cause the heat-transfer rate to

a. increase?

b. decrease?

c. not change?