Loading...

Messages

Proposals

Stuck in your homework and missing deadline? Get urgent help in $10/Page with 24 hours deadline

Get Urgent Writing Help In Your Essays, Assignments, Homeworks, Dissertation, Thesis Or Coursework & Achieve A+ Grades.

Privacy Guaranteed - 100% Plagiarism Free Writing - Free Turnitin Report - Professional And Experienced Writers - 24/7 Online Support

Important composers of the romantic period

16/12/2021 Client: muhammad11 Deadline: 2 Day

IntroductionIn this lab, the enthalpy of the combustion, ∆Hcomb, of butane will be measured experimentally and calculated theoretically. This is distinctly different from specific heat capacity. It is important to realize that heat emanates from the butane because it is reacting, not because it is high in temperature and cooling down. The heat is produced by burning butane, and this means that we need a different equation to calculate heat, q.The equation is q=(∆H)(amount).∆H is the symbol for enthalpy, which is the heat (gained or lost) for a process in which the product of the pressure and volume of the system is held constant.The units on ∆H are heat/amount. The amount is usually moles, but it could be other amount units such as grams or kilograms.In this lab we need to catch the energy that is evolved while butane burns and this will be done by a known volume of water. Again we will make the (not so good) assumption that the heat lost by the butane will be gained by the water.PRELADSet up a data/results table. Be sure and make a row for each process the data item.Procedure1.First light your portable butane burner to be sure it works and determine the correct height for your can set-up.2.Shut off the burner and measure the mass of the portable bunsen burner. (If the mass is more than the balances capacity, you may need to unscrew the burner unit on top. If you do this, be sure and mass if afterwards without the burner as well.)3.Tare the can and measure the mass of a half a can of cool water from the tap.4.Measure the starting temp of the cool water in the can.5.Heat the water (up to some temp above 60ºC and below 90ºC) by burning the butane. Immediately after shutting off the burner, record the hottest temp of the water.6.After shutting off the burner, measure the mass of the portable burner after completing the burn. Processing the dataa.The water is simply changed temperature. Calculate the heat gained by the water. b.Do a simple subtraction to calculate the mass of butane burned.c.Use the molar mass of butane to convert the mass of butane burned to moles of butane burned.d.The water changed temperature because of the burning butane, thus we will assume that the heat gained by water is equal to the heat produced by butane. Thus in part a) you actually calculated the heat given off by burning the amount of butane that you burned. Use that number with the mole values from part c) to calculate the energy evolved per 1 mole of butane burned. This is the experimental value of ∆Hcomb.Post LAD Questions1.The “Process the data” section took you step by step through the calculations. Alternatively, you could have done a literal solve of the the following equations and simply substituted your measured data.Formulas that you know and love:A. moles * molar mass = massB. qwater = cw * massw * ∆TwC. qbutane = ∆H * molesSet equation B and C equal to each other. Then solve equation A for moles and substitute into the combined equation you just wrote, then solve this “literal equation” for ∆Hcomb. (This means solve it for ∆H using just the variables.)LAD 10.3(pg 1 of 2)Enthalpy of a Combustion Reaction
2.Is burning butane and exothermic or endothermic reaction?Scientists have agreed that exothermic reactions will be symbolized with negative ∆H values and endothermic reactions will be symbolized with a positive ∆H values. After the calculations should we apply a + or – sign to the molar enthalpy that was calculated in “d”.3.Write a balanced equation for the combustion of butane.4.Now we need to determine a theoretical value for the burning of butane.We can go to the literature and look up a heat of formation value, ∆Hf for any substance listed. ∆Hf defined: The energy (lost or gained) for the reaction that represents the formation of that particular substance from its elements. Using the ∆Hf values listed on your Thermo Table, we can apply the following formula.∆Hrx = ∑n∆Hf products−∑n∆HfreactantsDon’t forget that ∆H values are extensive, and that they are reported per mole of some molecule. You must be sure and multiply the ∆H values times the coefficient, n (from the balanced equation) of that substance.5.The theoretical value for the combustion of butane is 2661 kJ/mol. Calculate a percent yield for the molar combustion of butane. We will take this % yield as a measure of the % of efficiency of our ability to utilize the chemical potential energy of the butane.6.How is the precision of the class data? How is the accuracy? Does it appear if the results are exhibiting random or systematic error? Explain.LAD 10.3(pg 2 of 2)Enthalpy of a Combustion Reaction•∑ means calculate the sum (add together)•n stands for the stoichiometric coefficient of the substance in the balanced equation.•∆Hf stands for the enthalpy value looked up on the list for formation reactions for the particular substance

Homework is Completed By:

Writer Writer Name Amount Client Comments & Rating
Instant Homework Helper

ONLINE

Instant Homework Helper

$36

She helped me in last minute in a very reasonable price. She is a lifesaver, I got A+ grade in my homework, I will surely hire her again for my next assignments, Thumbs Up!

Order & Get This Solution Within 3 Hours in $25/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 3 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 6 Hours in $20/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 6 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

Order & Get This Solution Within 12 Hours in $15/Page

Custom Original Solution And Get A+ Grades

  • 100% Plagiarism Free
  • Proper APA/MLA/Harvard Referencing
  • Delivery in 12 Hours After Placing Order
  • Free Turnitin Report
  • Unlimited Revisions
  • Privacy Guaranteed

6 writers have sent their proposals to do this homework:

Calculation Guru
Financial Solutions Provider
Coursework Help Online
Quality Homework Helper
George M.
Helping Hand
Writer Writer Name Offer Chat
Calculation Guru

ONLINE

Calculation Guru

I am an experienced researcher here with master education. After reading your posting, I feel, you need an expert research writer to complete your project.Thank You

$52 Chat With Writer
Financial Solutions Provider

ONLINE

Financial Solutions Provider

I reckon that I can perfectly carry this project for you! I am a research writer and have been writing academic papers, business reports, plans, literature review, reports and others for the past 1 decade.

$66 Chat With Writer
Coursework Help Online

ONLINE

Coursework Help Online

I find your project quite stimulating and related to my profession. I can surely contribute you with your project.

$79 Chat With Writer
Quality Homework Helper

ONLINE

Quality Homework Helper

I will provide you with the well organized and well research papers from different primary and secondary sources will write the content that will support your points.

$54 Chat With Writer
George M.

ONLINE

George M.

I have written research reports, assignments, thesis, research proposals, and dissertations for different level students and on different subjects.

$68 Chat With Writer
Helping Hand

ONLINE

Helping Hand

I have read your project description carefully and you will get plagiarism free writing according to your requirements. Thank You

$55 Chat With Writer

Let our expert academic writers to help you in achieving a+ grades in your homework, assignment, quiz or exam.

Similar Homework Questions

Butl_ Learnign Feamework - 1702 william ave henderson nv - Environmental Health (case 2) - The 'beijing consensus' was deemed an alternative to _________ by joshua cooper ramo. - Week 9 Discussion - 44 plimsoll street sans souci - Unit 5 Philosophy Assignment - Engstrom auto mirror plant milestone - Where were motte and bailey castles built - Process of evaluating each market segment attractiveness - Bode plot octave scale - 03.05 media and politics - Http www strategicbusinessinsights com vals surveynew shtml - Rydal park wellness center - Epidemiology Discussion 2 - Co2 electron dot diagram - Yarra river bike track - Reflections weight loss clinic erwin tn - Tutorials in introductory physics forces - Greenwich village society for historic preservation - What is the ionization energy of sodium - Disequilibrium syndrome priority nursing action - Bcg matrix for hershey company - Ethical hacking - X plane g1000 manual - I have so much homework hyperbole - The moths helena maria viramontes - Lean six sigma project charter - Masinde muliro university of science & technology - Apple and at&t alliance - Unit 4 Philosophy Assignment - Abortion should be legal thesis statement - Presidential election UNited States - Understanding variation is important because variation - 2nd law of motion experiment - Physics homework 5 graphical analysis - Iss - Project 1: Explore Networking in the Cloud ( Steps 1 trough 4, are already completed) - Environmental Factors and Health Promotion Presentation: Accident Prevention and Safety Promotion for Parents and Caregivers of Infants - Police call letter codes - Cargo securing for road transport - Excel chapter 1 grader project travel expenses - Module 05 Discussion - When Disaster Strikes - Computer aided design software is used primarily by ________ - Research Question for all projects-RESEARCH METHODS CRIMINAL JUSTICE - Intensity of spectral lines - Sandusky manufacturing company statement of cost of goods manufactured - Business and society lawrence pdf - Weller butane gas refill msds australia - Electronic data interchange edi is helpful to managers because - Shoes and sox size chart - Midpoint and length of a line segment - Assignment on security architecture and design - Hair color levels 1 10 chart wella - Valence electrons for each group - The american dream dead alive or on hold pdf - Omnibus leadership model - Non preemptive priority scheduling program in c with arrival time - Solivia 2.5 solar inverter - Ticket processing system - 300 words story in english - Overall equipment effectiveness ppt - Grc spray machine india - Hollow men dantes inferno - Urgent - Hum 100 worksheet: realism, impressionism, and the modern world - Games strategies and decision making exercise solutions - Module 6 Project Deliverables: Waste Walk & Root Cause Analysis - Character Analysis on either Mathilde Loisel from " The Necklace' or Emily Grierson from " A Rose for Emily". - The century stormy weather answers - Leap year program in python using functions - The story of an hour discussion - HSA 505 - Get away from me in shakespearean language - Strategic IT plan - Siemens rcr10 433 installation manual - Project scheduling in software engineering - Allerton grange high school - Holes book chapter 7 - Binary symmetric channel matlab code - History of astronomy worksheet answers - Titration lab abstract - Forecasting ppt in operations management - Assumptions and constraints examples - Natural and manmade materials list - Draft Review - Project-Organ Leader - The pedestrian figurative language packet answers - Nursing - Safenet authentication client linux download - What is a running record observation - City of monroe continuous problem solution - Paper of finance - Module b english advanced rubric - Human cheek cell experiment - Disability rights movement in canada timeline - Help - Selected comparative financial statements of korbin company follow: - Terre mere active coconut charcoal clarifying cleanser review - When was pluto formally downgraded from planet to dwarf planet