ABSTRACT Determining the melting point of a solid organic compound is the easiest way to identify the compound and determine its purity at the same time. For actual samples of compounds‚ the melting will occur over a range of temperatures making the melting points into a melting “range”. The difference between the temperature at which the sample begins to melt and the temperature at which it finishes melting‚ or the magnitude of the melting range‚ is a very important criteria of determining the
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Using Freezing-Point Depression to Find Molecular Weight Abstract: In this lab‚ the purpose was to use the freezing point depression method to determine the molecular weight of aspirin. This was done by determining the freezing of t-butanol and that of a t-butanol and aspirin solution; then finding the molality of the solution‚ and moles of aspirin. In the results of the experiment‚ the molar mass was found to be 192.2 g/mol‚ which differed from the established value of 180.2 g/mol by 6.7% error
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Windows 7 as an wi-fi access point » IT Geek Diary Page 1 of 3 Home About IT Geek Diary Best Practice from IT Geeks 20 Nov 09 Windows 7 as an wi-fi access point Now with Windows 7 you can share your internet connection as an access point with the the drivers that came with Windows 7‚ Windows also installs the Microsoft Virtual WiFi Miniport Adapter To configure it use the Command Prompt in Administrator elevated: netsh wlan set hostednetwork mode=allow ssid=itgeekdiary key=typepassword
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Purpose: The purpose of this lab was to determine the freezing point of pure water‚ the experimental van’t Hoff factor for a substance and the molar mass of an unknown solution. Reagents: 25mL deionized Water ¼ to ½ inches of rock salt 25mL Sodium Nitrate (NaNO3 ) 25mL unknown solution – handle unknown solution carefully Procedure: For part 1‚ the freezing point of deionized water was determined. An ice bath was prepared by filling a 600mL beaker ¾ full of ice and covered with ¼ to
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in the summer‚ Cedar Point has a positive impact on the economy of Erie County Ohio. Thru tourism‚ expansion and charitable works they have improved the economy of the area a thousand times over. Each year Cedar Point draws millions of tourists to the area. Those tourists stay in hotels‚ eat at restaurants and buy souvenirs. “Tourists spent more than $1.75 billion in the county in 2005‚ making it one of the most popular tourist destinations in the Midwest.” (Cedar Point Infuses Ohio Town with
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indirect control of a colonized area. Repressed ethnic and national groups around the world heard Wilson’s call for "national self-determination" as the herald’s trumpet for a new era as the 14 Points list the foundation for world peace. Despite their introduction after World War I in 1918‚ the 14 points are still relevant today as these ideas establish peaceful ideologies in other countries worldwide to maintain their people. Woodrow Wilson made the Democratic Party a “party of reform” by creating
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Wilson’s most famous speech. The speech had fourteen main points thus the speech became known as Wilson’s fourteen points. The speech states what Wilson felt was essential to establish peace. The purpose of the speech was to establish moral rules between the participants of WWI. Of the fourteen points talked about eight concerned specific geopolitical issues. The remaining six were basic ideas necessary for peace. The most important of these points were freedom of the seas‚ an end to secret treaties and
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HOW TO FIND OUT POINT GROUP Dr. Cyriac Mathew Symmetry elements can combine in a definite number of ways. For example consider BF3 molecule. It has the C3 axis as the principal axis. Also‚ there are 3 C2 axes perpendicular to the C3 axis‚ 3 σv planes‚ and one σh plane. All these symmetry elements can combine. Take NH3. It also has C3 axis as principal axis. There are 3 σv planes‚ but no C2 perpendicular to C3 or a σh plane. For the N2F2 molecule there exist one C2 axis and a σh plane but
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Lab Name: Molar Mass by Freezing Point Depression Researcher: Isabella Cuenco Lab Start Date: November 9‚ 2012 Lab Completion Date: November 9‚ 2012 Table of Contents SECTION NAME I. Introduction II. Procedure III. Data IV. Analysis V. Conclusion PAGE NUMBER I. INTRODUCTION Purpose: The purpose of the lab is to find the molar mass of an unknown substance by measuring the freezing point depression of a solution of the unknown
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Nick Boyea Billy Lee 3/9/11 Molar Mass by Freezing Point Depression Overview The purpose of this lab is to measure the freezing point depression of a solution of an unknown substance and BHT to determine the molar mass of the unknown substance. Summary of Lab Procedure If not already completed‚ crush a small amount of BHT and pack it into a capillary tube. Use a small rubber band to clamp the capillary tube to the thermometer‚ and fasten the thermometer to a ring stand. Fill a Thiele tube
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