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

Is a cold pack endothermic or exothermic

27/03/2021 Client: saad24vbs Deadline: 2 Day

Lab 5: Chemical Processes
INSTRUCTIONS:
· On your own and without assistance, complete this Lab 5 Answer Form electronically and submit it via the Assignments Folder by the date listed on your Course Schedule (under Syllabus).
· To conduct your laboratory exercises, use the Laboratory Manual that is available in the WebTycho classroom (Reserved Reading or provided by your instructor) or at the eScience Labs Student Portal. Laboratory exercises on your CD may not be updated.
· Save your Lab 5 Answer Form in the following format: LastName_Lab5 (e.g., Smith_Lab5).
· You should submit your document in a Word (.doc or .docx) or Rich Text Format (.rtf) for best compatibility.
Pre-lab Questions
1. Define enthalpy.

Enthalpy is a measure of the total energy of a thermodynamic system. It includes the internal energy, which is the energy required to create a system, and the amount of energy required to make room for it by displacing its environment and establishing its volume and pressure. The enthalpy is the preferred expression of system energy changes in many chemical, biological, and physical measurements, because it simplifies certain descriptions of energy transfer. This is because a change in enthalpy takes account of energy transferred to the environment through the expansion of the system under study.

2. What is the relationship between the enthalpy of a reaction and its classification as endothermic or exothermic?

Endothermic reactions draw heat in from their surroundings. Exothermic reactions give heat off to their surroundings.

Endothermic :

· Energy is drawn in from the external environment, causing its surroundings to loose heat, or "cool down."

· The endothermic chemical reaction creates a product that has a higher energy level than the original materials, causing the reactant's stored energy to decrease. (In scientific terms, the reactants have "less total enthalpy" than the product.)

· The resulting product of the reaction is less stable because, the higher the energy bond, the less strength its molecules possess.

· Most endothermic reactions are not spontaneous.

Exothermic

· Exothermic chemical reactions cause their surroundings to warm up by giving off heat.

· The reactants contain more stored energy than the product because energy from external sources is not required, but given off. This gives the product more stability due to the lower amount of energy needed. (In this case, the reactants have a "greater total enthalpy" than the product.)

· Exothermic reactions are usually spontaneous.

3. With instant hot compresses, calcium chloride dissolves in water and the temperature of the mixture increases. Is this an endothermic or exothermic process? Exothermic Process

image1.emfExperiment 1: Cold Packs vs. Hand Warmers

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:

Chartered Accountant
Top Grade Tutor
Smart Homework Helper
Engineering Solutions
Accounting & Finance Specialist
Accounting & Finance Master
Writer Writer Name Offer Chat
Chartered Accountant

ONLINE

Chartered Accountant

Give me a chance, i will do this with my best efforts

$95 Chat With Writer
Top Grade Tutor

ONLINE

Top Grade Tutor

You can award me any time as I am ready to start your project curiously. Waiting for your positive response. Thank you!

$66 Chat With Writer
Smart Homework Helper

ONLINE

Smart Homework Helper

I will cover all the points which you have mentioned in your project details.

$46 Chat With Writer
Engineering Solutions

ONLINE

Engineering Solutions

I have read and understood all your initial requirements, and I am very professional in this task.

$91 Chat With Writer
Accounting & Finance Specialist

ONLINE

Accounting & Finance Specialist

Give me a chance, i will do this with my best efforts

$129 Chat With Writer
Accounting & Finance Master

ONLINE

Accounting & Finance Master

I have read your project details. I can do this within your deadline.

$115 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

Murdoch chicago referencing - Sophos utm 9 load balancing - Hoover hurricane plus vacuum - Reconstruct the Four Dimensions of Diversity - Sn1 and sn2 reactions lab report - Access Control - Discus - Solenoid with an iron core - Policy and politics in nursing and healthcare pdf - Fujitsu fi 6140z driver - Week 3 Part 1 - Ethical and religious directives for catholic health care services 2016 - Is a key independent variable in positive organizational behavior research - Inside job movie reaction paper - Poetry #2 - English Comp 2 Week 2 - POL 201 American National Government NO PLAGIARISM PLZ - A letter to mrs roosevelt questions - Tate and lyle maple syrup morrisons - Examples of euphonious words - Delta airlines swot analysis presentation - Shear force and bending moment diagram for frames - Which was a major cause of the great depression - Naidoc week activity ideas - Mohs hardness scale worksheet - Consumer Behaviour - Assignment - Project dj accounting answers - Reid chocolates is considering a third layout - Http learn genetics utah edu content addiction mouse - A particular brand of dishwasher soap is sold in three sizes - The balance in the work in process account equals - Writting assignments - What is a dividend divisor and quotient - 15.457 advanced analytics of finance - At a certain location wind is blowing steadily - PMP4 - Henk guth simpsons gap - Equilibrium practice worksheet answers - Study questions the last lecture answers - Desert places analysis line by line - Siemens financial services leasing - How much is 1lb in kg - A 1.00 kg glider attached to a spring - Brisbane city council report - HN522 Assignment 6 (POWERPOINT)!! - Transcutaneous pacing electrical capture - BUS-FP3022 - Assessment 2 - Http crfb org stabilizethedebt - Imogene king theory in practice - Losing Isiah Case Study - Adverse Trauma with Sucide Ideation among youth - Particle count test for hepa filter - Internal control procedures for cash receipts do not require that - Romeo and juliet sealed with a kiss - I wandered as a lonely cloud analysis - Pygmalion in the classroom summary - 200 WORD RESPONSE - Data design a simple introduction to preparing and visualizing information - Adaptation worksheet answer key - Www uq edu au orientation - Reporting descriptive statistics apa - Followership and servant leadership compare and contrast army - 2 page writing - South devon college moodle leap login - Yo quiero taco bell translation - Skinner labeled unlearned reflexes or stimulus-response connections as - Ls1 high rise manifold kit - How to open scenario manager in excel - Civilization - Ib physics higher level pat roby - Why is job analysis important in human resources management - How to name haloalkanes - How to reclassify multiple transactions in quickbooks enterprise - External financing needed formula - Lower allithwaite parish council - Sociological imagination and homelessness - 8 point dif fft example - 8 cadna avenue felixstow - 21a rachelle road keilor east - OPS/350 WK5 FLOWCHART FOR PROCESSES - Which of the following is a dfss methodology - What is dutiable value of used car wa - Health related components of fitness - Ken and barbie killers today - Environmental effects of the hoover dam - Limitation of an experiment - Spatial awareness definition in physical education - Final Paper - What is a polariscope used for - Advocacy through legislation - Think social psychology duff 2012 - Assignment 1 - Trader joe's analysis - ANNOTATED BIBLIOGRAPHY - Oticon case study analysis - Describe the japanese feudal system - Determine the moment of inertia of the shaded area - The crimson thread of kinship - Dock leveler parts diagram - Research Paper - Unit 7Assignment - Final Assessment - Part 2 - Presentation