Editing Review For Energy And Labskills And Measurement II

ChemistryWiki | RecentChanges | Preferences

<center>Review for Energy and Labskills and Measurement II</center> 
 
Answer the following equation showing all work 
 
1. A chemical reaction absorbes 4.35Kcal of energy from 346ml of water. What is the initial temperature if the final temperature was 12.4degC? 
 
 
 
 
 
 
 
 
 
 
 
 
 
2. A substance occupies 2.243E-2 (2.24X10-2) liters and has a density of 0.053g/cm3. What is the mass of this substance in g? If this mass is given 45.2 cals of heat and has a specific heat of 0.456 cal/(gdegC), what is the final temperature if the initial temperature is 65.4degC?(Substance is not water) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
<center>Review for Energy and Labskills and Measurement II Page 2</center> 
 
3. Principal Steven was seen running on the high school track. If he ran 56.4mi/hr, how fast is he in m/s? As he finished, he said his "school spirit" made him do it. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Answer the following question in a clear and concise manner using proper English. 
 
1. Explain the three different modes of heat flowing including examples from your house. 
 
 
 
 
 
2. Define temperature and explain how it is not the same as heat. 
 
 
 
 
 
3. What is the difference between the absolute and relative temperature scale. Give an example of each (look in book). 
 
 
 
 
 
4. Explain what the three laws of Thermodynamic mean. 
 
 
 
 
 
 
 
 
 
 
<center>Review for Energy and Labskills and Measurement II Page 3</center> 
 
 
5. Explain the Kinetic Molecular Theory and how it applies to temperature and 2nd Law of Thermodynamics. 
 
 
 
 
 
 
 
 
 
6. Explain the difference between an exothermic and endothermic reactions including activation energy and the difference between the <nowiki>PE</nowiki>R and <nowiki>PE</nowiki>P. (graph a PE diagram and label appropriately.) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Answer: 1) 25.0degC 2) 1.2g,150degC 3)25.2m/s

View other revisions
ChemistryWiki | RecentChanges | Preferences