COLLIGATIVE PROPERTIES: FREEZING POINT DEPRESSION AND BOILING POINT ELEVATION DAY 1 – 04 FEBRUARY 2015 Colligative Properties Depends on the NUMBER of solute‚ not on the nature of solute particles Freezing Point Depression Boiling Point Elevation Vapor Pressure Lowering Osmotic Pressure Electrolyte and Nonelectrolytes Electrolytes •Separates in water forming a solution that conducts electric current •IONIC COMPOUNDS Non- electrolytes • does not allow the flow of an electric current • COVALENT
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Engineering and Chemistry Muralla St.‚ Intramuros‚ Manila Melting Point and Boiling Point of Organic Compounds Group No. 5 Manacup‚ Cris Vincent L. Oblena‚ Adrian D. Ong‚ Joshua Jyro B.* *Leader ABSTRACT In compounds‚ two of the physical properties affected by the varying structures are melting point and boiling point. Through the use of the Thomas-Hoover Melting Point Apparatus or the micro method‚ the melting and boiling point of organic compounds are now determined. The aim of this experiment
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temperature at which movement of the specimen is observed is recorded as the pour point. INTRODUCTION In the cloud point experiment‚ waxes will appear and thickens the oil and clogs fuel filter and injectors in engines. The wax also accumulates on the cold surfaces and forms an emulsion with water. The appearances of cloud point determine the first cloud of wax crystals in a liquid when it is cooled. Whereas‚ pour point experiment is to determine the minimum temperature of the oil which will continue
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When I turn a year older it’s a new year and brand new start. By turning a year older I will help hold myself to a higher standard. I will try to be more responsible and rely more on myself. Some don’t celebrate their birthdays or barely celebrate it‚ but me I celebrate to the fullest. Turning 16 is a huge time in an American teen. Others put more value on turning a different age‚ such as in Hispanic culture they put more values on turning 15. Since my family is spilt‚ we have a lot of dinners leading
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“cut-throat” competition. Automation of one’s point of sale and inventory system puts you a step ahead in the game. It helps you conduct business transactions with ease as you only have to press a few keys. It liberates you from countless paper works as computation of the day’s sale and keeping track of inventory are done automatically. With these things in mind‚ the proponents hopes that upon completion of this Proposed Point of Sale and Inventory System‚ will find it of great
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software and were very limited in function and communications capability. In August 1973 IBM announced the IBM 3650 and 3660 Store Systems that were‚ in essence‚ a mainframe computer packaged as a store controller that could control 128 IBM 3653/3663 point of sale registers. This system was the first commercial use of client-server technology‚ peer to peer communications‚ Local Area Network (LAN) simultaneous backup and remote initialization. By mid-1974‚ it was installed in Pathmark Stores in New Jersey
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factors that lead to the Iranian revolution of the 1970s‚ and it had a lasting impact on the Middle East as we know it today. The revolution showed the world what could happen when a nation is fed up with a leader who’s been‚ from the people’s perspective‚ ‘bought’ by the western world. Revolutions have happed all throughout history‚ but the revolution in Iran was unique‚ because it was the first one where a leader who was backed by the West had been defeated. Key sources for this analysis include
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without any symbols (including $‚ %‚ commas‚ etc.). Enter all dollars without decimals and all interest rates with up to two decimals. Read the syllabus for examples. The points for each question are listed in parentheses at the start of the question‚ and the total points for the entire assignment adds up to 100. Question 1 (5 points) Qin deposits his first paycheck in the bank. The annual interest rate is 12%‚ but interest is compounded quarterly. The EAR is: Your Answer | | Score | Explanation
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identify the possible candidate keys‚ the primary key‚ a probable foreign key‚ and potential secondary keys. a. PARTS (PART_NUMBER‚ STORE_NUMBER‚ PART_DESCRIPTION‚ QTY_ON_HAND‚ COST‚ RETAIL_PRICE) Candidate keys: PART_NUMBER is the only candidate key. No other field will identify parts uniquely. Primary key: PART_NUMBER is the primary key. Foreign key: STORE_NUMBER is a foreign key from the STORE table. Secondary keys: There are no other potential secondary keys. b. CUSTOMER (CUSTOMER-ID‚ CUSTOMER_NAME
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Sarah’s Key is a historical fiction novel that ties two stories into one. The novel is about Sarah Starzynski‚ a young Jewish girl in Paris during 1942. She is rounded up with thousands of other Jews in the Velodrome d’Hiver. Sarah is faced with the challenges of surviving and saving herself and possibly her younger brother. Julia Jarmond is an American journalist married to a French man in Paris during 2002. Julia is doing research on the Velodrome d’Hiver roundup and finds a picture of a young
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