Answer / kang chuen tat

(a) Let X = specific gravity of the 60 % mixture.
By interpolation for a straight line with constant m as gradient, then (75 - 40) / (0.877 - 0.952) = (60 - 40) / (X - 0.952). Then 35 / (-0.075) = -466.67 = 20 / (X - 0.952). X = -0.0429 0.952 = 0.9091.
(b) Let V = the required volume of the 40 % mixture.
Mass of ethanol in 75 % mixture Mass of ethanol in 40 % mixture = Mass of ethanol in 60 % mixture.
Then, 300 (0.877) (0.75) V (0.952) (0.4) = (V 300) (0.9091) (0.6).
Then 197.325 0.3808 V = 0.5455 V 163.638. V = 204.53 gallons.

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.

We are having proplem with the persperation smell in ETT/ECHO room in our cardiac hospital.The 2 Ton of AC is not conditioning the environment. We have to use exhaust fan to through out of the room bad air. Could anyone suggest how to coup with this effectively using chemical engineering. Any permanent solution to neutralise the bad smell.The Air freshners are not doing enough instead making a bad odour.

0 Answers  

---

Mention some of the specialized grinding and crushing methods.

0 Answers  

---

ENGINEERING PHYSICS - EXAMPLE 30.2 : The Planck-Einstein relation connects the particulate photon energy E with its associated wave frequency f to produce E = hf. Let h to be the Planck constant. The frequency f, wavelength L and speed of light c are related by E = hc / L. With p denoting the linear momentum of a particle, the de Broglie wavelength L of the particle is given by L = h / p. (a) Find the equation of E as a function of p and c. (b) If E has a unit of electron-volt and f has a unit of 1 / second, then what is the unit of h?

1 Answers  

---

which chemical reaction has the maximum evolution of heat?

3 Answers   IOCL,

---

Question 108 - (a) The correct statement about both the average value of position (<x>) and momentum (<p>) of a 1-dimensional harmonic oscillator wavefunction is <x> = <p> = 1 - x. Find the value of x. (b) The probabilities of finding a particle around points A, B and C in the wavefunction y = f(x) are P(A), P(B) and P(C) respectively. Coordinates are A (3,5), B (4,-10) and C (6,7). Arrange P(A), P(B) and P(C) in term of a < b < c, when | y-coordinate | signifies the probability.

1 Answers  

---

Are there any general rules for flushing slurry lines?

0 Answers  

---

Dielectric materials in static fields

0 Answers   HCL,

---

REACTION ENGINEERING - EXAMPLE 13.1 : In a furnace, 2 chemical reactions are happening - 1 mole of solid carbon reacts with 1 mole of oxygen gas to generate 1 mole of carbon dioxide gas; 1 mole of solid carbon reacts with 0.5 mole of oxygen gas to generate 1 mole of carbon monoxide gas. In a given process, 100 kmol of carbon is burned in a furnace. (a) Calculate the theoretical oxygen gas needed by assuming that all the carbon is burned completely to carbon dioxide gas. (b) Calculate the theoretical air needed by assuming that all the carbon is burned completely to carbon dioxide gas and there is only 21 % of oxygen gas. (c) Determine the amount of air required (in kmol) if 50 % excess oxygen gas must be satisfied for (a) and (b). (d) It has latter been found that 20 % of the carbon undergoes incomplete combustion resulting to carbon monoxide gas production. The rest of the carbon undergoes complete combustion. Calculate the total oxygen gas required stoichiometrically based on the actual process.

1 Answers  

---

sir/mam . I am a fresh student of chemical engineeing. i've somuch fear to face intervies. I become neverse when entered into company. what shall I do? please suggest me some tips to face the interview.

3 Answers  

---

Explain what particle sizes are electrostatic precipitators used to remove?

0 Answers  

---

What is the meaning of the critical speed of a turbine, and what are its effects on the shaft line

1 Answers  

---

why GOD ALMIGHTY has made every living thing by water?

5 Answers  

---