occurs when lichens are exposed to polluted air. When the lichens are dropped into any of the metal solutions‚ their cell wall releases the methylene blue ions‚ which are replaced by metal cations. Upon their detachment‚ the ions integrate into the solution‚ which in turn‚ colors it blue. The darker the solution‚ the more metal cations taken in by the lichen. Valence is a measure of how much an atom wants to combine with something else. If the valence of a metal ion affects lichen uptake‚ then the higher
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is involved with the cannon being fired then the force of gravity would cause the cannon to start to slow down‚ wouldn’t go as far and the direction or trajectory of the cannon ball would be a curved line going down. Purpose: The purpose of this lab is to give the student a better understanding about projectile motion and to understand Newtons theories and laws of motion. We will be firing the plastic ball from the projectile launcher three times from eight different angles from the ground &
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SKIN • Largest and heaviest organ of the body; accounts for about 15% of the total body weight • Also called as cutaneous membrane • Skin contains two layers‚ the epidermis and the dermis. • The hypodermis is the layer underneath the skin. FUNCTIONS • Skin is a protective covering that prevents harmful substances from entering the body. • It helps regulate body temperature and water loss. • It houses sensory receptors and contains immune system cells. • It synthesizes chemicals and excretes
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Laszlo Vass‚ Ed.D. Version 42-0027-00-01 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 students’ writing of lab reports by providing this information in an editable
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Organic Chemistry II Lab 9 Fermentation of a Carbohydrate: Ethanol from Sucrose * Introduction Ethanol is one of the oldest alcohols and also the least toxic one. Industrially‚ ethanol is made most economically by hydration of ethylene. However‚ ethanol that is intended for human consumption must‚ by law‚ be prepared by fermentation. By either method‚ ethanol‚ of course‚ has the same formula‚ structure‚ and properties. The fermentation takes place with the assistance of enzymes from yeast
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The article “UPDATE: ‘The Onion’ Has Finally Confirmed There Were No Survivors In The Challenger Disaster” by I. Newton talks about ‘The Onion’ article and their anyslition on the event. This is for the Americans and families who lost someone in the disaster to answer their questions on if anyone could survive the Challenger disaster. When things back to that event or watching a video that was recorded of the event it is very sad and terrifying that something like that happened and with this article
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CHEMISTRY LAB REPORTS How to Write a Lab Report Lab Reports gives the explanation of the experiment done Lab reports are an essential part of all laboratory courses and usually a significant part of your grade. If your instructor gives you an outline for how to write a lab report‚ use that. Here ’s a format for a lab report you can use if you aren ’t sure what to write or need an explanation of what to include in the different parts of the report. A lab report is how you explain what you did
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understanding about the properties and characteristics of the different devices that can be used in a piping system is necessary for the choice of the appropriate devices to be used in future experiments. In the second part of the experiment‚ we observe how the flow rate of a fluid changes with respect to the head of the pump. The graph plotted in called a Pump Characteristic Curve. In this experiment‚ the performance curve deviated from the
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The Charge/Mass (e/m) Ratio of the Electron PHYS 0212: Introduction to Laboratory Physics Fall 2012 Abstract The experiment conducted demonstrated correlation between the charge and mass of an electron and the behavior of magnetic fields. The lab was divided into four parts. The first three parts were conducted with a compass that was used to locate the magnetic field lines around a bar magnet‚ a solenoid and then a pair of Helmholtz coils. As a result of these trials‚ our observations found
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Osmosis Lab Research Question: In this lab‚ our goal was to look at the effects of different sucrose concentrations on osmosis in potatoes. Our research question was “How do the sugar levels affect the rate of osmosis in potatoes?”. Background Information: Solutions consist of solutes dissolved in a solvent. In all living organisms there are many different types of solutes including salts and sugars. The major solvent is water. There are different concentrations of solutes in various regions
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