1-What is a mol of a species of molecular weight , in terms of (a) a number of molecules? (b) a mass?

2-What is a ton-mole of a species?

3-How many lb-moles and lb of (a) H and (b) H are contained in 1 lb-mole of H O?

4-How many gram-moles of C H are contained in 2 kmol of this substance?

5-One hundred kilograms of molecular hydrogen (H ) is fed into a reactor each hour. What is the molar flow rate of this stream in gram-moles/hour?

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Nestor RutherfordLv2

17 Dec 2019

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Related questions

A) How many of the following are found in 1500 g of benzene (C₆H₆)?

kg C₆H₆

mol C₆H₆

lb-mole C₆H₆

mole (g-mole) C

mol H

g C

g H

molecules of C₆H₆

B) A mixture of methanol and methyl acetate contains 45.0 wt% methanol.

Determine the g-moles of methanol in 300.0 kg of the mixture.

The flow rate of methyl acetate in the mixture is to be 100.0 lb-mole/h. What is the mixture flowrate in lb_m/h?

Ethylene oxide is produced by the catalytic oxidation of ethylene:

2C₂H₄ + O₂ â 2C₂H₄O

An undesired competing reaction is the combustion of ethylene:

C₂H₄ + 3O₂ â 2CO₂ + 2H₂O

The feed to the reactor (not the fresh feed to the process) consists of 3.00 moles of ethylene per mole of oxygen.

The single-pass conversion of ethylene to either ethylene oxide or carbon dioxide is 15.0%, and for every 100.0 moles of ethylene consumed in the reactor, 90.0 moles of ethylene oxide emerges in the reactor products.

A multiple-unit process is used to separate the products: ethylene and oxygen are recycled to the reactor, ethylene oxide is sold as a product, and carbon dioxide and water are discarded.

Assume a quantity (100.0 mol/h) of the reactor feed stream as a basis of calculation, draw and label the flowchart, perform a degree-of-freedom analysis, and write the equations you would use to calculate (i) the molar flow rates of ethylene and oxygen in the fresh feed, (ii) the production rate of ethylene oxide, and (iii) the overall conversion of ethylene.

a. Calculate the following quantities.

Molar flow rate of ethylene in the fresh feed: mol/h C2H4
Molar flow rate of oxygen in the fresh feed: mol/h O2
Production rate of ethylene oxide: mol/h C2H4O
Overall conversion of ethylene: %

b. Calculate the molar flow rates of ethylene and oxygen in the fresh feed needed to produce 1 ton per hour of ethylene oxide.

Molar flow rate of ethylene:

lb-mol/h C₂H₄

Molar flow rate of oxygen: lb-mol/h O₂