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Using the bond energies provided below, calculate ΔH° for th…

Using the bond energies provided below, calculate ΔH° for the reactionCH4(g) + 4Cl2(g) → CCl4(g) + 4HCl(g)Bond energies: C–H = 413 kJ/molCl–Cl = 243 kJ/molC–Cl = 339 kJ/molH–Cl = 427 kJ/mol Show your work for this problem. Right after submitting your exam, upload your photos to the Assignment Box, “Calculations for Final Exam”

  For each of the following, write down a queueing model usi…

  For each of the following, write down a queueing model using Kendall’s representation that best represents the system description. Assume exponential service times and Poisson arrivals. Leave no spaces in your answer. (a) At an airport check-in counter, there are four agents handling identical tasks. Passengers take a ticket number and are served by whichever agent becomes available next. The check-in hall can only accommodate up to 40 passengers at a time  including those being served. [answerA] (b) In a university library, there is a single help desk where one librarian assists students with research questions. The waiting area has plenty of space, so students can line up without restriction. [answerB] (c) A small IT support office has two technicians working in parallel. The office serves a fixed group of 20 employees, each of whom independently experiences a computer issue on average once every two hours. [answerC]  

Does the number of purchases made by a customer depend on wh…

Does the number of purchases made by a customer depend on whether s\he opens the promotional email? Answer True or False below in the first textbox and provide the reasoning below. No credit will be given without the reasoning.  True or False: [TorF] Reasoning: [shortReasoning]

Customers arrive at a pharmacy pickup counter with a single…

Customers arrive at a pharmacy pickup counter with a single attendant. The interarrival time has a mean of 2 minutes and a standard deviation of 1 minute 20 seconds. The service time for fulfilling a pickup has a mean of 1 minute 30 seconds and a standard deviation of 45 seconds.Using Kingman’s formula, compute the average waiting time in queue for customers in minutes. Show your work on the scratch paper to receive any credit; no points will be given without the work. Provide four digits after the decimal point.