ABSTRACT Beer’s Law is an empirical relationship that relates the absorption of light to the properties of the material through which the light is travelling. In turn‚ absorbance is proportional to concentration and the higher the concentration‚ the higher the absorbance. This experiment incorporated Beer’s Law and is focused on determining the stress that various alcohols have on biological membranes. Using five solutions of differing alcohol concentration for each of the three alcohols; methanol
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Understanding the Thermodynamics of Titrated Borate. Alexis Cervantes and Ak Young. CHEM 114-07 April 30‚ 2024. Introduction The purpose of this experiment was to evaluate thermodynamic values and understand their relationship to equilibrium constants. By measuring the change in enthalpy (H°) and the change in entropy (S°)‚ the equilibrium constant (Ksp) was determined for the dissolution of borax in water. In procedure one of the experiment‚ the temperature of the borax solution
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The Help Helps Out While reading The Help by Kathryn Stockett‚ it quickly becomes apparent that in 1960’s Southern Mississippi‚ the maids‚ or “the help”‚ played an important role in the family—not only as the maid‚ but often also as the childcare. The maids formed a special bond with the children‚ especially the children who were very young or were born during the maid’s time at the household‚ and in a lot of cases‚ the children seemed to be the only reason the help stayed with the family they
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Activity 6.2-Membranes Organize a Cell’s Activity Dissect a Plasma Membrane Objective: to understand the structure of a membrane 1. Why is the membrane described as a phospholipid bilayer? It is described as a phospholipid bilayer because there are two layers of phospholipid molecules. 2. How does the arrangement of the phospholipids form a bilayer? The phospholipids arranged in two layers so that the charged phosphate heads interact with the water on either side of the membrane‚ and the
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Biology Unit 1 – Section 3.1.1 Microorganisms as Pathogens To be considered a pathogen it must: Gain entry Colonise the tissues Resist the defences Cause damage to the tissues Pathogens include bacteria‚ viruses and fungi How do microorganisms enter the body Many pathogens enter through the gas exchange system (including ones that cause flu and TB) Food and water can carry pathogens into the stomach and intestines via the mouth and into the digestive system (including
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1 Introduction and Basic Concepts 1-1 Thermodynamics and Energy Application Areas of Thermodynamics 1-2 Importance of Dimensions and Units Some SI and English Units Dimensional Homogeneity Unity Conversion Ratios 1-3 Systems and Control Volumes 1-4 Properties of a System Continuum 1-5 Density and Specific Gravity 1-6 State and Equilibrium The State Postulate 1-7 Processes and Cycles The Steady-Flow Process 1-8 Temperature and the Zeroth Law of Thermodynamics Temperature Scales The International Temperature
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Peaceful resistance to laws positively impacts a free society.someone who peacefully resists a law doesn’t harm anyone and gets their point across. This positively impacts society because it shows them they can change a law they don’t like without using violence and still have their voice heard.For example Muhammad Ali’s peaceful resistance got his voice heard around the world.He stood for what he believed in and did it the right way peacefully.He had supporters around the world behind him and his
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First Law-Exercise: Problem 1: A volume 10 m3 contains 8 kg of oxygen at a temperature of 300 K. Find the work necessary to decrease the volume to 5 m3‚ (a) at a constant pressure and (b) at constant temperature. (c) What is the temperature at the end of the process in (a)? (d) What is the pressure at the end of process in (b)? (e) Show both processes in the p-V plane. Problem 2: The temperature of an ideal gas at an initial pressure p1 and volume V1 is increased at constant volume until the pressure
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Substance Abuse Substance Abuse is a problem for social workers around the country no matter where you go. There are a number of different social problems‚ and social systems that a social worker will have to deal with when working in this field. I will hope to address the problem of substance abuse‚ and the different techniques used in order to cure a client suffering from substance abuse. Substance abuse social workers assess and treat individuals with substance abuse problems‚ which include
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Cannabis How does cannabis work? When smoked‚ cannabis from the lungs goes into the blood and is carried to every part of the body. Several chemicals in cannabis bind to receptors in areas of the brain that deal with pleasure‚ memory‚ thought‚ concentration and the awareness of time. There are two main kinds of chemical involved: * A group called the cannabinoids‚ which seem to give you the more pleasant effects - feeling relaxed‚ happy‚ sleepy‚ with colours appearing more vivid and music
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