The effect of size on the effectiveness of diffusion Aim: To use agar blocks infused with 0.1 Molar sodium hydroxide (NaOH) and phenolphthalein to investigate the relationship between shape and surface area: volume ratio on the effectiveness of diffusion. Hypothesis: That for a cube of agar‚ the time taken for complete colourisation due to diffusion of HCl is directly proportional to the cubes volume. Materials: |A block of agar (10cm x 5cm x 3cm) with 0.1M NaOH and |1x 250mL
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Introduction: Diffusion and osmosis are passive processes of transport. Passive transport involves no disbursement of energy by the cell. Diffusion movement is from high concentration to low concentration‚ which the driving force for this type of movement is kinetic energy particles themselves. Which crystal (Methylene blue‚ solid or Potassium Permanganate KMnO4-purple) will move further than the other due to the driving force (kinetic energy)? My prediction is that Potassium Permanganate KMnO4-
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Diffusion is the molecular net movement from a higher concentration to a lower concentration. For instance‚ when a person is smoking‚ the smoke diffuses into the air. The molecules in the smoke‚ released from the cigarette‚ travel through the air. Here is how it occurs. When molecules are close enough‚ they collide with each other‚ their kinetic energy changes. Due to the direct relationship between diffusion and molecular kinetic energy‚ the molecules move away from the point of the collision as
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importance to the discussion of the Art of Ancient Near East: Citadel Hammurabi Sargon Ziggurat Cuneiform Cylinder seal Mesopotamia Hierarchical scale Stele Glyptic art 2. List two important Neolithic sites in the ancient Near East: a. b. 2. What might be the meaning of the animals represented on the Lyre sound box (fig. 2.14a)? 3. The land known as Mesopotamia lay between what two rivers? 4. The Ishtar Gate built in Babylon was (fig. 2.30) was created of ______________________
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Thesis: During the years between 3000 BCE and 600 BCE‚ Mesopotamia and Egypt’s empirical build-up and ways of trading were alike; however‚ there were visible gaps in their traditions and cultures. | MESOPOTAMIA | SIMILAR | EGYPT | POLITICAL | -empires included Sargon of Akkad‚ Hammurabi‚ Assyrian‚ and New Babylonian (Nebuchadnezzar)-kings‚ that normally ruled with local nobles-nobles were through birth in rich families; could not work way up-city-states to control public life within city walls
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Where as the active transport requires energy from the molecule to be moved. oFacilitated diffusion can only move in one direction from high concentration to low concentration‚ which is with the gradient. Where the active transport can move from both low concentrations to high concentrations‚ therefore it can move against the gradient where as the facilitated diffusion can not. The process of active transportation is when a molecule work together with the active side of a protein
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The first text that is mentioned by Reilly‚ is that titled‚ Assyrian law. These codes tell us many things about the role of women in early civilization. The following code comes from two official documents that were from an empire based in Mesopotamia as far back as 1‚100 B.C.E. The Assyrian law which will be discussed first‚ gives knowledgeable understanding of the attitudes of the men towards the women in that time period. The Assyrian law introduces many different concepts relating to the
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Lab 1: Diffusion & Osmosis 9/16/14-9/19/14; Jessica Bullock‚ Andrew Buchholz‚ Kristamae Masiclat TITLE: Different Ways to Express Diffusion and Osmosis INTRODUCTION: Diffusion is the spontaneous movement of a substance down its concentration gradient‚ from a region where it is more concentrated to a region where it is less concentrated. Osmosis is the diffusion of water across a selectively permeable membrane. The objective of this lab is to observe the different effects of diffusion and osmosis
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Introduction In Diffusion‚ Dialysis & Osmosis lab‚ we discovered that we were going to observe and understand the conditions under which diffusion‚ dialysis‚ and osmosis occur. Then we constructed models of diffusion‚ dialysis‚ and osmosis. We predicted that the direction of change would be from the membrane to the beaker. We understood how these processes affected the selectivity of the cell membrane. The second part of the lab was dealing with dialysis. In this part we studied starch and sodium
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The Technology-Diffusion Model illustrates how a social institution reacts to a new technology as follows: • “Innovative technology is created • Institution adopts technology to carry out existing functions more efficiently • Institution accommodates internally to take better advantage of new efficiencies • Institution develops new functions and activities made possible by capabilities of the technology • Institution may become obsolete‚ be replaced‚ or be radically transformed • Other institutions
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