MAT.SCIENCE+ENGIN.(PERUSALL ACCESS)
10th Edition
ISBN: 2818440149658
Author: Callister
Publisher: PERUSALL
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Chapter 13, Problem 1QAP
To determine
To cite:
The desirable characteristics of glasses.
Expert Solution & Answer
Answer to Problem 1QAP
The desirable characteristics of glasses are explained below.
Explanation of Solution
Glasses are the non-crystalline materials that contain more percentage of silicon dioxide
- 1. In general, the glasses are transparent that permit visible light to travel through it.
- 2. Comparatively they have good
mechanical strengths. - 3. The glasses are more resistant to chemicals.
- 4. The fabrication process of glasses are easy.
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A liquid mixture of benzene and toluene containing 52.0 wt% benzene at 100.0 °C and pressure Po atm is fed at a rate of 32.5 m³/h into
a heated flash tank maintained at a pressure Ptank
Material Balances
Correct.
0.67/1
===
Attempts: 1 of 5 used
Calculate Ptank (atm), the mole fraction of benzene in the vapor, and the molar flow rates of the liquid and vapor products.
Ptank
.544
atm
Ybz
.657
mol benzene/mol vapor product
nvapor
55.8
mol/s
nliquid
37.6
mol/s
Hint
GO Tutorial
Energy Balance
Check heat capacities.
Calculate the required heat input rate in kilowatts. i
0.447
kW
Hint
GO Tutorial
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Attempts: 2 of 5 used
Assistance Used
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Homework 8
A stream of pure cyclopentane vapor flowing at a rate of 1650 L/s at 190.0°C and 1 atm enters a cooler in which 50.0% of the feed is
condensed at constant pressure.
Question 4 of 5
Correct
What is the temperature at the condenser outlet?
49.3
°℃
eTextbook and Media
Hint
Enthalpy Table
Your Answer Correct Answer (Used)
0.67/1
E
Attempts: 1 of 5 used
Prepare and fill in an inlet-outlet enthalpy table. Use a reference state of liquid cyclopentane at the boiling point.
In
T = 190.0°C
Out
T=49.3°C
Substance
n (mol/s)
Ĥ (kJ/mol) n (mol/s)
Ĥ (kJ/mol)
C5H10(1)
0.0
21.708
0.0
C5H10(V) 43.416
43.687
21.708
27.30
Heat
Check significant figures and sign.
Calculate the required cooling rate (a positive number).
! kW
Hint
Save for Later
Attempts: 3 of 5 used
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Current Attempt in Progress
A liquid mixture of benzene and toluene containing 52.0 wt% benzene at 100.0 °C and pressure Po atm is fed at a rate of 32.5 m³/h into
a heated flash tank maintained at a pressure Ptank
Your answer is partially correct.
1.312
atm
Assistance Used
0.58/1
Calculate Ptank (atm), the mole fraction of benzene in the vapor, and the molar flow rates of the liquid and vapor products.
Ptank
i
atm
.657
Ybz
mol benzene/mol vapor product
nvapor
55.8
mol/s
nliquid
37.6
mol/s
Hint
GO Tutorial
Save for Later
Energy Balance
Calculate the required heat input rate in kilowatts. i
kW
GO Tutorial
Save for Later
Assistance Used
Attempts: 1 of 5 used
Submit Answer
Assistance Used
Attempts: 0 of 5 used
Submit Answer
Chapter 13 Solutions
MAT.SCIENCE+ENGIN.(PERUSALL ACCESS)
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