Answer / kangchuentat

QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - ANSWER 31.9 : Let [p,x] f(x) = px f(x) - xp f(x) = (-ih d / dx) x f(x) - x (-ih d / dx) f(x) = -ih { d / dx [ x f(x) ] - x d f(x) / dx } = -ih [ f(x) ] + x d f(x) / dx - x d f(x) / dx = -ih [ f(x) ]. Then [p,x] = -ih. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.

what is petrol density ? why ?

3 Answers   Reliance,

---

What is the maximum permissible Earth to Neutral voltage in an electrical system.

0 Answers  

---

Can you pls tell me how to calculate the amphere rating of cable in case of three phase supply but all load is single phase

0 Answers  

---

How can I evaluate the thermal relief requirements for double block-in of 98% sulfuric acid?

0 Answers  

---

Are there flow velocity restrictions to avoid static charge build up in pipelines?

0 Answers  

---

Why do we apply on iron articles?

0 Answers  

---

What chemical is used to expand air bags in such a short amount of time?

0 Answers  

---

what three specific job positions do u target from the company.

2 Answers   Amec Foster Wheeler, Chevron, Exxon Mobil, Petrochemicals, TCS, Texaco,

---

why is cross over inlet provided in a furnace?

3 Answers   Essar,

---

CHEMICAL MATERIAL BALANCE – EXAMPLE 2.6 : According to Raoult's law for ideal liquid, x (PSAT) = yP where x is mole fraction of component in liquid, y is mole fraction of component in vapor, P is overall pressure and PSAT is saturation pressure. A liquid with 60 mole % component 1 and 40 mole % component 2 is flashed to 1210 kPa. The saturation pressure for component 1 is ln (PSAT) = 15 - 3010 / (T + 250) and for component 2 is ln (PSAT) = 14 - 2700 / (T + 205) where PSAT is in kPa and T is in degree Celsius. By assuming the liquid is ideal, calculate (a) the fraction of the effluent that is liquid; (b) the compositions of the liquid and vapor phases. The outlet T is 150 degree Celsius.

1 Answers  

---

Explain what are some good uses of low-grade steam at 12 atm and 1920c?

0 Answers  

---

What is mean by pump head 5 meter?

6 Answers  

---