Objectives 1. To recognize the macroscopic properties of five chemical systems at equilibrium 2. To observe shifts in equilibrium concentrations as stresses are applied to the systems. 3. To observe a shift in equilibrium concentrations associated with changes in temperature. 4. To explain the observations obtained by applying Le Chatelier’s principle. Materials Refer to page 209 of Heath Chemistry Laboratory Experiments. Procedure Refer to pages 209 – 211 of Heath Chemistry
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Chapter 6: Chemical Bonds Section 6.1: Ionic Bonding Chemical bond: the force that holds atoms of elements and ions together to become a stable‚ new substance called a compound. -the number of valence electrons determines if an atom will form a chemical bond. -metals tend to give up electrons to other atoms. -nonmetals tend to take electrons from other atoms. -noble gases will not form a chemical bond because these atoms already have a full outer shell of energy. Ionization: the
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Toggle Sidebar Find Previous NextPage: of 5 Tools Zoom Out Zoom InAutomatic ZoomActual SizeFit PageFull Width50%75%100%125%150%200% Chemical Oxygen Demand (COD)Introduction:The Chemical Oxygen Demand (COD) test is the standard method for measuring the amount of pollution in a sample that is unable to be oxidised biologically.Oxidation takes place on both the organic and inorganic component but as the organic component is more dominant‚ it is
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Danger: Chemical Sunscreens Sunscreen is meant to be a product designed to protect the skin from the sun. The first form of sunscreen was a red‚ petroleum jelly like substance that was mainly used to aid troops during WWII‚ it then transformed into a sort of pasty‚ white substance of zinc oxide. As the years passed and society began to evolve into one that craved sun kissed skin‚ many companies started to brainstorm in search of a new kind of sunscreen. The formula they aimed for was one that protected
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time could be extended. 6You have probably noticed that attendance at the gym increases from 4 p.m. to 8 p.m. 7We wish it were possible to accommodate all our customers on their favorite equipment during those hours. 8Although we can’t stretch an hour. 9We would like to make better use of the time between 8 p.m. and 11 p.m. 10With more members coming later‚ we would have less crush from 4 p.m. to 8 p.m. 11To encourage you to stay later‚ security cameras for our parking area are being considered by
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Diamond Chemicals PLC (A): The Merseyside Project Late one afternoon in January 2001‚ Frank Greystock told Lucy Morris‚ “No one seems satisfied with the analysis so far‚ but the suggested changes could kill the project. If solid projects like this can’t swim past the corporate piranhas‚ the company will never modernize.” Morris was plant manager of Diamond Chemicals’ Merseyside Works in Liverpool‚ England. Her controller‚ Frank Greystock‚ was discussing a capital project that she wanted to propose
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What counts as vigorous-intensity aerobic activity? Examples of activities that require vigorous effort for most people include: •jogging or running •aerobics •swimming fast •riding a bike fast or on hills •playing singles tennis •playing football •hiking uphill •energetic dancing •martial arts Vigorous-intensity aerobic activity means you’re breathing hard and fast‚ and your heart rate has gone up quite a bit. If you’re working at this level‚ you won’t be able to say more than
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which out of the four balanced chemical equations best represent the thermal decomposition of sodium bicarbonate. The guiding question will be answered with the outcome of the sodium bicarbonates thermal decomposition and it being plugged in into the four balanced chemical equations. John Dalton atomic theory explains two fundamental laws of chemistry which are the law of conservation of mass and the law of definite proportions. The atomic theory states that a chemical reaction is simply a rearrangement
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MGMT 524 Activity 9.2 Capstone Case Study Henry Clements Car Rental Agency Henry Clements is a friend of yours who has a car rental agency in a major metropolitan area. Although his is an independent company‚ Henry works closely with three other independent companies in the metro area. They share information and each week they forecast the number of cars each will need the following week. Then‚ if needed‚ they will transfer cars between locations on Sunday when none of the agencies are open
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Activity Handout 7.1 Solve This Problem Choose from the list of problem scenarios below. Using the steps involved in problem solving that were discussed in this chapter‚ describe how you would go about solving this problem. 1. Mrs. Smith’s daycare provider is closing in four weeks. Both Mr. and Mrs. Smith work full-time during the day and need daycare for their child. They have only a short period of time‚ however‚ to find a new‚ safe‚ reliable daycare provider. : I would start looking or asking
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