to one of two specific groups (2 from one and 1 from the other). In order to do this we will be using various tests and reactions and observing the effect they had on our solution. Materials: Pasteur pipets Bunsen Burners Stirring rods Excess reagents Hot plates Sample QA unknown 101-5.7 Table of steps and observations: Step/Test |Observation |Inference | |2-1 Adjustment of pH |Upon adding 5 drops of HCl no change was observed |The solution became acidic‚ seperating the group
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Substance Abuse among Juveniles Unit 9 Final Project Substance abuse by juveniles is a major problem in our communities. Substance abuse among juveniles 12 and older is on rise (Substance Abuse and Mental Health Services Administration‚ 2010). For some juveniles‚ drinking or using drugs is the only way they feel they can cope with problems in their lives. The rise of substance abuse by juveniles is contributing to a number of problems such as increased crime and school dropout rates. The
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Understanding ion permeability is vital to knowing how it establishes a membrane potential‚ and how it eventually leads to the contraction of muscle cells. This was done using crayfish tail muscles. Lateral and medial tail muscles from the tail of a crayfish were excised. These muscles were then placed into solutions with different types of ion concentrations. Usage of different ion concentrations was necessary in practicing how to measure resting membrane potentials accurately. Measurements with
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3/4/14 Determining The Formula of a Complex Ion Luqman Khan Contents: Aim………………………………………………………………………………………………………………….……2 Results……………………………………………………………………………………….………………………2-6 - Raw Data………………………….………….……………………………………………………..…..2 - Qualitative Analysis………………………………………………………………………………….2 - Data Processing……………………………..……………………………………………………..3-5 - Graphical Results……………………………..…………………………………………….…….5-6 Conclusion…………………………………………………………………………………………………………6-7 Evaluation……………………………………………………………………………………………………………
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Removal of Hexavalent and Total Chromium from Aqueous Solution by Avocado Shell Eliseo Cristiani-Urbina1‚*‚ Alma Rosa Netzahuatl-Muñoz1‚2‚ María del Carmen Cristiani-Urbina3 1 Escuela Nacional de Ciencias Biológicas‚ IPN. Prolongación de Carpio y Plan de Ayala s/n. Colonia Santo Tomás. México‚ D.F.‚ 11340‚ México. ecristia@encb.ipn.mx 2 Universidad Politécnica de Tlaxcala. Av. Universidad Politécnica No. 1. Colonia San Pedro Xalcaltzinco. Tepeyanco‚ Tlaxcala‚ 90180‚ México. 3 Universidad Autónoma
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November 2015 Hydrogen Peroxide According to Lee Lerner‚ (2008)‚ “Hydrogen Peroxide is most widely found in homes in brown bottles containing three percent solutions (3% hydrogen peroxide and 97% water).” Lee Lerner (2008) writes “Hydrogen Peroxide is a colorless liquid that mixes with water and is widely used as a disinfectant and bleaching agent.” Hydrogen Peroxide is used in many different ways and has different hazards. “Hydrogen peroxide is a strong oxidizing agent used in aqueous solution as a ripening
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Enthalpy for Decomposition of Hydrogen Peroxide Objective: To construct a coffee cup calorimeter‚ measure its calorimeter constant‚ and determine the enthalpy of decomposition and formation of hydrogen peroxide. Background: This experiment is a classic thermodynamics lab. In it‚ we attempt to measure the enthalpy (H) of a chemical reaction. The main obstacle is that this is a quantity that cannot be measured directly. It instead is observed as heat from one substance is transferred to another while
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2010 Controlled Substances By definition a controlled substance is a “drug or chemical substance whose possession and use are regulated under the Controlled Substance Act.” Controlled substances can range from marijuana‚ cocaine‚ heroin‚ crystal meth‚ and even prescription drugs. They are considered illegal in the state of Illinois and if caught with them you can be convicted with severe punishment. But‚ what if they are being used for medical reasons? (Controlled Substances) According to
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Substance abuse‚ also known as drug abuse‚ is a patterned use of a substance (drug) in which the user consumes the substance in amounts or with methods neither approved nor supervised by medical professionals. Substance abuse/drug abuse is not limited to mood-altering or psycho-active drugs. If an activity is performed using the objects against the rules and policies of the matter (as in steroids for performance enhancement in sports)‚ it is also called substance abuse. Therefore‚ mood-altering
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Substance Abuse And The Effects Of Substance Abuse Substance abuse is seen as maladaptive and not considered dependant but can lead to dependency with certain drugs. There is a huge range of drugs such as alcohol‚ cocaine‚ amphetamines‚ benzodiazepines and opiates. Some of these drugs are illegal in some countries and regions and can lead to criminal prosecution if caught in possession or under the influence of them. Public health practitioners have undertaken many studies into drug abuse from
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