# Category Archives: chemistry

## determine the roots of a virial equation of state with cubic order dependency on specific volume.

The project will involve determining the roots of a virial equation of state with cubic order dependency on specific volume.  This program can be used in the future for helping to determine phase transition on the PVT surface for any PEOS.

We want to do this in an object-oriented way, where the specific parameters will be supplied in separate functions apart from the main program.

Any PEOS can be put into virial form, so this program can be used for any specific PEOS, including RK, van der Walls, Peng Robinson, etc.

We will use the Peng Robinson parameters which will be supplied as a separate function.

Matlab or Python is permitted.

The virial EOS is discussed in Chapter 6 of your book, so you can begin reading about….

## Write a synopsis of a couple paragraphs about the fire including the type of occupancy, the cause or suspected cause of ignition if unknown, materials involved, flame spread description, characteristic of spread through the compartments (if compartment fire

Select a fire of significance (one that was in the news, known in history, or one that you are personally familiar with.) Write a synopsis of a couple paragraphs about the fire including the type of occupancy, the cause or suspected cause of ignition if unknown, materials involved, flame spread description, characteristic of spread through the compartments (if compartment fire). Following the synopsis, conduct a scientific analysis of at least three different aspects of the fire using some of the concepts we discussed in class with Heat transfer, Fire load energy density, Heat release rate, T-squared fire growth, Flashover calculation, Fire severity, Steel structures analysis, Concrete Structures analysis and etc. Include more than just narrative descriptions of the analysis, but include diagrams, equations and calculations (the fun stuff)…..

## What was done and with what objectives

GUIDE FOR THE PREPARATION OF REPORTS

This guide for the writing of laboratory reports is intended to help you write your reports and to understand the criticisms of them made by your instructors. You should study this guide before writing each report, review it before turning in each report, and use it to help interpret the criticism on reports returned to you.

You write reports in this course not only to explain the experiments performed and what you learned from them, but also to learn, under the guidance of you instructors, something about the kind of writing you will be expected to do as an engineer.

Engineers write many kinds of reports. Some of these, perhaps most, may be called routine reports, involving the filling in of blanks….

## Describe a chemical-related safety or environmental hazard that is related to your design project.

Write no more than one -page single space of text. I will attach a document shows what is our design project about

The title of the design project is ( Preliminary Production Pathway of Silicon Precursor, TCS, for Solar PV Manufacturing ) check the file so you can understand the topic

Describe a chemical-related safety or environmental hazard that is related to your design project. Suggested content: o Background of the process and plant o Chemical involved o What caused the disaster? o What impact did the disaster had on the local population, society, environment, and chemical industry? o How a better design could have prevented such a catastrophe, etc.? o Example: If you reactor involves catalyst, you could summarize a CSB report on an incident involving reactors using solid catalysts. Alternatively,….

## Explain what it is about the equation that gives away its empirical nature. (

{ “cells”: [ { “cell_type”: “markdown”, “metadata”: {}, “source”: [ “\n”, “<center><h2> ChE 113: Chemical Process Analysis <br> HW #2 <br> Due: 9-16-2018 </h2> Problems adapted from *Elementary Principles of Chemical Processes*, 4th Edition, by Felder, Rousseau, and Bullard) </center>” ] }, { “cell_type”: “markdown”, “metadata”: {}, “source”: [ “### Problem 1 ###\n”, “A published study of a chemical reaction, $A \\to P$, indicates that if the reactor initially contains $A$ at a concentration *C<sub>A0</sub>* and the reaction temperature, *T*, is kept constant, then the concentration of $P$ in the reactor increases with time according to the formula \n”, “\n”, “$$C_P(g/L)= C_{A0}(1-e^{-kt})$$\n”, “\n”, “The *rate constant*, *k*(s<sup>-1</sup>), is reportedly a function only of the reaction temperature. To test this finding,….

## Are spaces equipped with signage regarding permit required?

Chapter 13 Prominent Case Studies Using Strategic Safety Measures Safety Wisdom: The absence of injuries does not equal the presence of safety; you’re not controlling the process if you just measure outcomes. Paul Woerz Numerous organizations have reaped the benefits of well-planned and effectively implemented leading measures for safety. Safety professionals can learn lessons for application from these cases regarding what to do, and in some cases, what not to do. The cases overviewed here are mostly model cases that offer innovative and powerful concepts, as well as methods that can be used in various industries. When possible, this chapter will present the following for each case study: the initial driver for change; the results of change; status; how the results were accomplished; and any lessons learned for….

## what is the final temperature  for the flowing

Lecture # 18 Handout   by J.W. Van Zee 19‐Sep‐17

Problem 4.2.  Statement: FIND: For steady flow through a heat exchanger at approximately atmospheric pressure, what tis the final temperature

for the flowing: a. When 800 kJ of heat is added to 10 moles of ethylene initially at 200C Ethylene = C2H4 b. When 2,500 kJ is added to 15 moles of 1 butene initially at 260C. 1‐butene =  c. When 10^6  Btu is added to 40 lb mole of ethylene initially at 500 F. Ethylene = C2H4

Known: Q, kJ=  varies by part Properties: schematic: T_0, C varies by part Heat capacity coeffficents:

T_0, K varies by part Ethylene 1‐Butene T,K = varies by part T=? n, moles=  varies by part A 1.424 1.967

B 1.44E‐02 3.16E‐02 Assumptoins: none C ‐4.39E‐06 ‐9.87E‐06

D 0 0 Q varies by part Analysis:

Use equation 4.7 or equaiton 4.8. Here we use equation 4.7 to intergrate the Cp/R from  T0  = 200C to T . This results from an energy balance on the heat exchanger for a flow system Part c.  500 F= 533.13 K which yields     0=Q + ΔH and  ΔH = H_in ‐ H _out and  where becuae of the integral: dH =  ‐Cp*dT. Part c.  1 btu =  1055 J

Part c.  1 lb mole = 453.6 g moles Part a.  n, mole =   10 Part b.  n, mole =   15 Part c.  n, mole =   18,144

Q, kJ = 800 Q, kJ = 2,500 Q, kJ = 1,055,040                T_in,K 473.15 solving for T_out,K T_in,K 533.15 solving for T_out,K T_in,K 533.13 solving for T_out,K T_out,K 1374.4476 T_out,K 1413.8 T_out,K 1202.746053 R, J/mol‐K = 8.3143 R, J/mol‐K = 8.3143 R, J/mol‐K  8.3143 τ = T_out/T_in = 2.90488767 τ = T_out/T_in 2.6517 τ = T_out/T 2.256008953 τ ‐ 1= 1.90488767 τ ‐ 1= 1.6517 τ ‐ 1= 1.256008953 τ ^2‐ 1= 7.43837237 τ ^2‐ 1= 6.0316 τ ^2‐ 1= 4.089576397 τ^3 ‐ 1 = 23.5125238 τ^3 ‐ 1 = 17.6457 τ^3 ‐ 1 = 10.48212992 (τ‐1)/(T_in*τ) 0.00138593 (τ‐1)/(T_in*τ) 0.0012….

## Prepare a sketch, using ISA standard symbology for the following flow metering and control scenarios

Prepare a sketch, using ISA standard symbology for the following flow metering and control scenarios: The goal of this problem is to get your familiar with the different symbology in controls.

a. orifice meter located on pipe A, independent P/I transducer, 4-20mAmp transmitter, independent field flow controller, independent 4-20 mAmp I/P transducer, pneumatically operated flow control valve located on pipe B

b. venturi meter located on pipe A w/ digital output, independent field flow indicator, plus centralized indicator in DCS

c. integrated mass flow controller w/ digital output located on pipe A plus centralized indicator in DCS

d. orifice meter located on pipe A w/ digital output, fieldbus-compatible flow control valve located on pipe B plus centralized indicated in DCS

## What should the government do to prevent companies from making unethical decisions?

Erin Brockovich

https://www.imdb.com/title/tt0195685/

Instructions

Write a 5 page paper (excluding title and reference page) in APA double spaced paragraph format answering the following questions. Do not strictly answer the questions in itemized format, and use citations where references are applicable. The idea behind the short paper is to watch the film and see what knowledge you have learned throughout reading the textbook you see applicable in the film and your own critical thinking/interpretation of it:

Write a brief summary about the current situation in the movie and what has transpired throughout the film. During the summary, reference on some of the key points below. You are not restricted to these topics only:

a. What is the problem, who are some “parties” that are affected by the….

## analyze the contribution of all three resistances.

The objective of this experiment is to measure the overall mass transfer coefficient for a hollow fiber membrane dialyzer and determine the individual contributions of the lumen, membrane, and shell mass transfer resistances.

1. Introduction

This experiment involves the study of dialysis, which is the transport of molecules across a membrane through diffusion. Diffusion is a naturally occurring process where a solute passes from an area of high concentration to an area of lower concentration; the concentration differences are the driving force since this is a mass transfer situation. The diffusion will continue until both phases have reached an equilibrium concentration. In this experiment, a particular application of dialysis will be explored, namely artificial kidneys for the purification of blood.

Hemodialyzers are the name of the….