– Separating Sand & Salt Purpose: The purpose of this experiment is to separate a mixture of sand and salt. Materials: Small beaker Electric balance Sand Salt Water Graduated cylinder Stirring rod Filter paper Flask Rubber policeman Wash bottle Funnel Bunsen burner complete with rubber tubing and a source of gas Hot hands Insulator pad Ring stand complete with a ring Wire gauze Striker Pre-lab Questions: 1. Water will be useful in separating the salt and sand because salt is soluble in water‚
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Effect of light on Silver Halide Salts Aim: To investigate the effect of sunlight and UV light on silver salts and to identify an application of this reaction. Hypothesis: The compounds exposed to sunlight (which already contains UV light) will decompose. The compounds which are not exposed to light (put in a dark place) will not decompose. Theory: Equipment: * 4 x petri dishes * 1 x glass stirring rod * 0.1 mol/L silver nitrate in a dropper bottle * 0.1 mol/L Sodium chloride
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In Barbara Ehrenreich’s book Nickel and Dimed‚ Ehrenreich explores the dynamics of social stratification by gender in working class America. Similarly to race‚ Ehrenreich shows how gender and gender roles are a part of a closed system in the American workforce. One can first see this early on in the book when Ehrenreich works as a waitress. Ehrenreich describes a dynamic in this work setting in which female workers are subservient to a dominant male manager who is very critical. She mainly shows
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to pleas her husband. In this humorous essay she is expressing her and other women’s feelings about how there husbands treating them and the chores that there husbands make them perform. The second writing is a poem called "The faithful wife" by Barbara L. Greenberg. This poem As the matter of fact I would like to have a wife myself if that’s what a women’s duties are to be born to make her husband feel and enjoy life‚ however I am not a male and I disagree 100% with the things that a women should
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In the novel The Bean Trees by Barbara Kingsolver one of the main characters named Estevan says “We believe that if something terrible happens to someone‚ they must have done something to deserve it.” The author of the novel wrote it the complete opposite of what Estevan says‚ meaning bad things happen to good people and good thing happen to bad people. That it doesn’t matter if you’re good or bad‚ bad things still happen to good people and vice versa. Esteven is right‚ that we as Americans believe
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RUNNING HEAD: AQUARIUM DIFFERENCES 1 Freshwater vs. Saltwater Aquariums C. Kevin Barr ENG121 Andrea Bear August 28‚ 2012 AQUARIUM DIFFERENCES 2 Freshwater vs. Saltwater Comparison There are many differences when it comes to freshwater versus saltwater aquariums. We ’ll try and shed some light on some of the differences when it comes to tank types‚ aquarium
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Section II: Case Study II - The Salt Lake Organising Committee: 2002 Olympics Our analysis of the case study had the following objectives: 1. To focus on the role of the new management in redesigning the organization to ensure successful execution of the 2002 Winter Olympics; 2. To identify the practices involved in the various stages of the project life cycle; 3. To discover how testing and validation reduce risk and uncertainty when planning a one-time event such as the Olympics. The bribery
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The effect of salt concentrations on the mass of the pear cubes ‘Pyrus’ after being soaked in water Aim: The effect of salt concentrations on the mass of the pear ‘Pyrus’ pieces shaped as cubes of 1cm. Background: Osmosis is the net movement of water molecules through a semi-permeable membrane from an area of higher water potential to an area of lower water potential. Water makes up to 70-90% of living cells and cell membranes are partially permeable membranes. Dissolved substances attract
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My conclusion is that the higher salt concentration in the solution the greater the decrease in mass of the potato will be‚ the graph I have drawn supports my conclusion. The 10% salt concentration shows that on average the potato loses 2.6% of its overall mass. 20% salt concentration shows a further decrease in mass this time it is an average of 13% overall mass decrease. 30% salt concentration shows an average decrease of 18.8% in overall mass. The 0% salt concentration actually shows a mass increase
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What stood out to me in Chapter 6 was the chunking section on pg. 209. I am currently reading a book called "A Mind for Numbers" by Barbara Oakley; it is a book primarily about how to study math and science‚ however‚ I am see that the techniques could be applied to the arts or just about any other subject. Chapters 4 and 7 primarily focus on how to chunk. The main concepts of the book are primarily about how memory works and how to make it work for you. It explains the concepts of spaced repetition
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