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

Lush cosmetics swot analysis - Domestic containment - What is the purpose of marking classified information - Mintzberg's modes of strategic decision making - The knowers by helen phillips pdf - Ethics Paper - Which of the following organelles contain oxidative enzymes capable of oxidizing toxic substances? - Juno and the paycock summary - Mark twain the lowest animal questions - Form 27 corrective services - Programming c++ code for ticket parking - No speak english sandra cisneros pdf - Can the construction of sponge cityies be the framework for the development of sustainable urban drainage systems? Case study: Case study: One or two sponge cities in China - Highline university mentor program case questions - Difference between social science and social studies pptdifference between social science and social studies ppt - Webcast bkwsu eu uk - Austrian Players' Gateway to the Best Online Casino Experience - Comparing argumentative texts silent spring and save the redwoods - Exercise 23 questions to be graded - 2.5 litres to pints - Complex report (part of it is in excel) - I am david book report - Summarize god's statements in genesis 2 16 18 - Sarbanes-Oxley Act - How to calculate mva power - Raychem bptm 50 20 - Viscose definition brave new world - Quartus pin assignment tutorial - Bt st albans data centre - Baby albert conditioning worksheet answers - Real life situations using linear equations - Pinkies swap meets 2021 - Board game project rubric - Domestic companies facing competitive pressure from lower cost imports - Emerging Issues in Mental Health care - What does a 950 sat score mean - Ionic bonding problems with answers - Lithium has two naturally occurring isotopes - Information Systems Research in the Digital World. - IDM W 4 Midterm - Drugs ending in prazole - Pride and Prejudice. - Psychology diffusion of responsibility - Understanding and using english grammar 4th edition answer key pdf - When was municipal gum written - Disadvantages of enterprise application integration - Module 2_DisasterRecovery - Harry potter lesson plan pdf - Constructing a field map lab answers - Track lighting current limiter - Which sentence uses punctuation correctly - Natural gas ch is burned in a furnace - K nex modeling of dna lab answer key - HLS685 D4 - Gwen harwood father and child - Mornington peninsula walking tracks - Wk 2 – Assessment and Student Learning Outcomes Worksheet Wk 2 – Assessment and Student Learning Outcomes Worksheet - Land acquisition process flow chart - A can of bull case study - Discussion Board - Assignment - Countries with autocracy based governments have - How many atoms are in 0.70 mol of iron - The ethics of dissent managing guerrilla government pdf - Zinn chapter 1 study questions answers - Phoenicians competed with minoans for control of - Research paper - How many pints are in a liter - reading discussion - Thread 1 and 2 - The pirate code fer laddies answer key - Thermo king alarm codes - Cell specialization worksheet pdf - Silvers gym - How does a bond's rating affect its price - Nihongo-ban ChattoGPT: Nihongo ni tokka shita kōdo na taiwa AI - Does proactiv have bleach in it - Ge - Arlene g orejana biography - Phetics - Looking For Professional Cover Letter Writing Services in Canada? - An eccentric force p is applied as shown - 5 weeks online course for the marketing - How does a arctic fox protect itself - Social Venture - Applied healthcare management - When did gerber start making baby food - Iu plagiarism certification test answers - Peri model in public health - +91-8890675453 love marriage problem solution IN Darbhanga - Case study.. Prejudice bias reflection paper [ course: Theories of Human Behavour] - I need help with managerial Finance assignment. - Iron iii hydroxide plus phosphoric acid - Electrical separation shaver socket diagram - Emily bear rhapsody in blue - Usaa guaranteed renewal endorsement - Newton heath sure start family planning contact number - How to raise leverage in capsim - The Breakfast Club Movie (1985) - The star inn troes