This lab experiment investigates the effect of listening to different types of music on one’s pulse. The experiment relates the circulatory system to the pulse as it measures how quickly the heart contracts and releases blood. Pulse is measured in beats per minute (bpm). One’s pulse is loudest near the heart‚ because there is more pressure closer to the heart. In contrast‚ one’s pulse is quieter the further away it is measured from the heart‚ because there is less pressure the further the distance
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Dehydration of 2-Methylcyclohexanol February 10‚ 2013 Introduction This experiment was done to demonstrate the practical use of dehydration reactions and produce three different products. Dehydration reactions are reactions that involve the leaving of an “-OH” or “-H” group resulting in the formation of a double bond between two carbons. For the experiment we used 2-Methylcyclohexanol as a beginning reagent to dehydrate and possibly form 3-methylcyclohexene‚ 1-methylcyclohexene‚ or methylenecyclohexane
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substances through the membrane. The other is called passive process‚ which does not require ATP energy and the transport process is driven by concentration or pressure differences between the interior and exterior of the cell. All molecules are in constant motion‚ ergo‚ possessing kinetic energy. This kinetic energy is the motivating force in diffusion. During diffusion‚ molecules that are small enough to pass through a membrane’s pores or molecules that can dissolve in the lipid bilayer of a membrane
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The different methods of measuring acids and bases in a solution By Starsky Intro to Biology September 26‚ 2011 Lab Partners: Kristen‚ Tania and Betty Introduction When using different methods to measure pH levels there are some tools that can be useful. Some more than others but by putting into action the different methods it may determine which tools will work best and give the best
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non-ionic organic-soluble forms to water-soluble ionic forms by changing the pH levels. In the experiment done in this lab‚ a mixture of and a neutral compound and either an acid or base impurity will be separated by an acid-base extraction. The unknown compound will then be purified by recrystallization and identified by melting points. Experimental Discussion The solubility of the basic component was manipulated to show that the basic compound was ether insoluble and water soluble. The extraction
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Make sure that there are no problems with your lab that could affect the results before you turn on the light source‚ for example‚ a broken beaker or light source. 12. Make a table to record your results from the lab with. Make the table 4 columns wide‚ mark the first column with “Time”. Mark the second column with “number of floating chads in beaker #1”. Mark the third column with
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flour‚ sugar‚ tablespoon vanilla‚ half vegetable oil and half margarine‚ egg‚ little bit salt‚ baking powder. Next‚ we combined sugar and butter in a bowl‚ and we mixed the ingredients with a hand whisk until there were no lumps. Added vanilla‚ and eggs‚ and we stirred thoroughly. Then we prepared the dry ingredients of our recipe. We mixed all dry ingredients together (flour‚ baking powder and salt). Once we both mixtures completed‚ we slowly combined them
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Heats Effect on Borax By: Alexis H. Prince Department of Chemistry; Coastal Carolina University‚ Conway‚ SC 29526 April 13‚ 2015 Introduction Borax has many uses‚ whether it’s being used as an antiseptic‚ helping to cure people‚ getting rid of pests‚ or even assisting fruit trees in their growth. It is actually the most important source of the element boron‚ and has been used for years as a “water softening agent.” Borax was found forming in saline lakes‚ or one may find it in Boron‚ California
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CHM151LL Laboratory Report Form Fall 2011 Title: Project 5: SPECTROPHOTOMETRIC ANALYSIS OF A PENNY Date Run: 04/03/2012 Date Submitted: 04/15/2012 Grade: _____________________ Objectives: The purpose of this experiment is to use spectrophotometry to determine the percentage of copper in a copper-clad penny‚ and to determine the thickness of copper layer on the copper-clad penny. Introduction: In the spectrophotometric analysis of a penny lab‚ we will be conducting three
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Abstract This lab is performed in order to determine the total energy in a reaction between zinc and hydrochloric acid. The reaction is done twice‚ once to measure the heat of the reaction and again to determine the work done in the system. This is because Enthalpy equals heat plus work (∆H= ∆E+W). Heat and work can be broken down further into separate components so the equation used in lab is ∆H=mc∆T + PV. Many calculations are used in the lab to find out what cannot be measured directly (ex:
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