COMPETENCIES

2016.3.7 : Thermochemistry

The graduate determines quantities of heat released or absorbed during chemical reactions to examine relationships between heat and other forms of energy.

INTRODUCTION

In an experiment, the amount of heat released from several fuels (when they are burned in air) has been measured using a calorimeter. Your task is to analyze an assigned data set to determine the heat of combustion of the fuel used in that experiment. You will also write a short paper describing a device that transforms one form of energy to another.

To complete this task, you will first need to retrieve your assigned data set. You will do this by downloading the attached “Thermochemistry Assignment Form.” Then you will enter your name and the last six digits of your student identification number into the spreadsheet. For example, if your student ID number were 001555XYZ, then you would enter 555XYZ into the spreadsheet.

REQUIREMENTS

Your submission must be your original work. No more than a combined total of 30% of the submission and no more than a 10% match to any one individual source can be directly quoted or closely paraphrased from sources, even if cited correctly. The originality report that is provided when you submit your task can be used as a guide.

You must use the rubric to direct the creation of your submission because it provides detailed criteria that will be used to evaluate your work. Each requirement below may be evaluated by more than one rubric aspect. The rubric aspect titles may contain hyperlinks to relevant portions of the course.

Obtain your assigned calorimetry data set from the attached “Thermochemistry Assignment Form.”

Then analyze the data from your assigned calorimetry data set by doing the following:

Calculate the heat of combustion in units of kJ/mole for the combustion of the fuel used in the experiment. Show your work, including using the appropriate units and significant figures.
Using the attached “Heat of Combustion of Fuels Table,” identify the chemical formula for the fuel by comparing the heat of combustion that you calculated in part A1 to known values.

Identify a mechanical or biological device that transforms one form of energy into another form of energy.

Note: The device can be real or theoretical.

Explain the device’s purpose and how it transforms one form of energy into another form of energy, identifying the two forms of energy.
Describe how the two forms of energy identified in part B1 are different from each other. Provide authoritative sources to support your description.

Acknowledge sources, using in-text citations and references, for content that is quoted, paraphrased, or summarized.

Demonstrate professional communication in the content and presentation of your submission.

File Restrictions

File name may contain only letters, numbers, spaces, and these symbols: ! – _ . * ‘ ( ) File size limit: 200 MB

File types allowed: doc, docx, rtf, xls, xlsx, ppt, pptx, odt, pdf, csv, txt, qt, mov, mpg, avi, mp3, wav, mp4, wma, flv, asf, mpeg, wmv, m4v, svg, tif, tiff, jpeg, jpg, gif, png, zip, rar, tar, 7z