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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Introduction: The objective of this experiment is to demonstrate osmosis by using an egg as a model. In order for this to happen the vinegar will make the eggs shell disappears. The reason for this is because vinegar has acetic acid and the shell has calcium carbonate‚ when these come into contact it produces carbon dioxide. This is the reasoning for the little bubbles when the egg is first put into the vinegar. After the shell discinigrates it will become rubbery from the acetic acid‚ at this
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The play “A Raisin in the Sun” by Lorraine Hansberry depicts an African American family with many struggles‚ and by analyzing their struggles‚ certain lessons and the theme of this drama can be identified. While the family does seem to hold together‚ there are many problems that arise‚ such as having family issues‚ trying to fit into a community of a different race‚ struggling financially‚ etc. By the end of the play it seems as if the family has been able to figure things out a little more‚ but
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A Raisin in the Sun is a play written by Lorraine Hansberry. The play takes place during the 1950s with the Younger family. The Younger’s live in a cramped apartment on the south side of Chicago. The Younger’s are excited this particular morning because of the arrival of the ten thousand dollar check coming in to the family because of the death of Walter Younger Sr. Ideas clash on how the money should be spent. Walter Lee‚ the protagonist‚ wants to invest in a liquor store‚ while his sister Beneatha
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The Effect of Osmosis on Differences of Amount of Sucrose Osmotic Pressure and its Influence on the Concentration of Sucrose in Solution Brennan Montoni Movement of molecules and Ions Names of Lab Partners Biology 110 March 23‚ 2011 Code of Academic Integrity INTRODUCTION: During the process of osmosis‚ water will move across a differentially permeable membrane. The water will transfer from a region of lesser solute concentration to a region of greater solute concentration
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Essay: A Raisin in the Sun It is a common notion that money doesn’t buy happiness. Or does it? The classic play‚ “A Raisin in the Sun”‚ by Lorraine Hansberry seeks to reflect on this idea. The play recounts the story of the Youngers‚ a poor African American family‚ who are awaiting the arrival of a $10‚000 insurance check. This check arouses great tension and conflict within the family. Clearly‚ money is a central theme in the plot. Each character has a different idea of what to do with
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“A Raisin in the Sun‚” Lorraine Hansberry‚ October 1994‚ 1950s Ruth Younger: Walter’s wife and Travis’ mother Walter Lee Younger: Dreamer‚ wants to be rich‚ and makes plans with friends to become wealthy Lena Younger: Walter and Beneatha’s mother. religious‚ moral‚ and maternal Beneatha Younger: Lena’s daughter and Walter’s sister. Attends college and dreams of becoming a doctor Travis Younger: Walter and Ruth’s son Joseph Asagai: From Nigeria‚ proud of his heritage
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Osmosis/Plasmolysis Lab Name: Problem: How do solutions of various salt concentrations influence osmosis in relation to an onion cell? Materials: (per student group): red onion epidermis forceps‚ dropper distilled water NaCl solution paper towels microscope slide cover slip Procedure 1. Make a wet mount of the red onion epidermis. 2. Examine under low power. When you have a clear view of several cells‚ switch to high power. Make a labeled drawing
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In the play‚ A Raisin in the Sun‚ by Lorraine Hansberry. The author shows Walter’s crave for money with the ambition of him wanting to start up a liquor store‚ but his sole focus is cash. As the story advances Walter grasps the importance of his relatives by not accepting the offer from Mr. Linder‚ but by remaining in the house because it’s fitting for the Younger’s. Throughout the story Walter starts from a man who ties the American dream to achieving wealth who then realizes the value of family
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“Mom we have to do something with the $10‚000 what do you want to do with it”‚ I wish my family had $10‚000 and needed my help to find out what to do with it. I probably would open up a family store or something. After viewing the movie and reading the play that was a good idea with what the mom planned to do but Walter should have never opened the liquor store after mom was undecided about getting one‚ but she let him do it anyway. In the play the entire story happens in the Youngers living room
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