Background examination for the Dominant Thumb Experiment: • Upon reading the literature that the researcher found by googling‚ "Thumb Dominance‚" they discovered that almost every human being has a dominant thumb whether it be the right thumb or the left thumb on top after naturally clasping their hands together. However‚ if the individual tries to force their clasped hands to let the other thumb become dominant it ’s most often described as feeling awkward or abnormal. In 1999‚ a scientist by the
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Although osmosis does not require input of energy‚ it does use kinetic energy and can be made to do work. The osmotic pressure is defined to be the pressure required to maintain an equilibrium‚ with no net movement of solvent. Osmotic pressure is a colligative property‚ meaning that the osmotic pressure depends on the molar concentration of the solute but not on its identity. Osmosis is essential in biological systems‚ as biological membranes are semipermeable. In general‚ these membranes are impermeable
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Department of Chemistry [Colligative Properties & Osmotic Pressure] Purpose : The experiment this week had two different purposes. The first is to teach us about freezing points. This lab was designed to show us the freezing point of a pure solvent‚ in comparison to a solvent in a solution with a non-volatile solute. The second goal of the experiment is to teach students about osmosis. In the experiment‚ we got to observe osmosis as well as understand dialysis
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experiment was to determine whether or not salt would affect the boiling point of water. Much of the research I conducted rejected my hypothesis which stated: if I add salt to water‚ then the boiling point of the water will decrease. Factors such as colligative properties determine how a solvent will behave once it becomes a solution (Bradley‚ 2006). Much of the research involved used boiling point elevation as a method to explain why the boiling point of water is affected by salt. Although my hypothesis
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Date: Name: Title: Material Safety Data Sheet Experiment (Experiment 6) 1. Write about a page in your own words‚ about your understanding of MSDS and emergency review from MSDS-PDF folder of CD provided by LabPaq CK-EF‚ page 65. Material Safety Data Sheet (MSDS) Material Safety Data Sheet (MSDS) provides information about the chemicals substances and supplies you will be handling in your lab package. The MSDS provides detailed instructions on proper ways “to handle‚ store‚ transport‚ use and
Free Chemistry Chemical substance Material safety data sheet
References: 1. 1. LabPaq Lab Manual Caloric Content of Food by Peter Jaschofnig Ph.D. Pgs 92-97
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3. Observations (12 pts); The color of the flame is expected to be as follows: Metallic ion Flame Color Sodium Na+ Orange Strontium Sr2+ Pinkish-red Potassium K+ Bluish-purple Lead Pb2+ NOT IN LABPAQ Barium Ba2+ Yellow Copper Cu2+ Green Lithium Li+ Pink Calcium Ca2+ Orangish-pink Unknown Pinkish-red STRONTIUM Note: Attach your picture showing the soaked cotton swab back and forth through the flame of the heat source (procedure
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n.d‚ the freezing point of a liquid is decreased by adding to another compound to it. This is known as freezing point depression. The pure solvent will have higher freezing point than the solution. Colligative property of matter can explain more about freezing point depression. Whereas‚ colligative properties depends on the number of particles present. Based on Hyperphysics‚ 2001‚ certain properties of the solute might effect the freezing point depression rather than concentration. By conducting
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Colligative Properties & Osmotic Pressure Peter Jeschofnig‚ Ph.D. Version 42-0149-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate student’s writing of lab reports by
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Physical and Chemical Properties Peter Jeschofnig‚ Ph.D. Version 42-0188-00-01 Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that
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