Liquid toluene is flowing through a pipe at a rate of 175 m3/h. (a) what is the mass flow rate of this stream in kg/min? (b) what is the molar flow rate in mol/s? (c) in fact, the answer to part (a) is only an approximation that is almost felder, richard m.; rousseau, ronald w.; bullard, lisa g.. elementary principles of chemical processes, 4th edition (page 72). wiley. kindle edition.

Density of Toluene

Rate of flow of liquid toluene is

a)To find the mass flow rate, we need to multiply volume flow rate by density:

Mass flow rate

(because 1 hour =60 min)

b)

Molar Mass of Toluene=92.14 g/mol

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.