Precipitation Reactions 2-4: Precipitation Reactions 1. Start Virtual ChemLab and select Reactions and Stoichiometry, and then select Precipitation Reactions from the list of assignments. The lab will open in the Inorganic laboratory. 2. React each of the cations (across the top) with each of the anions (down the left) according to the data table using the following procedures: Data Table | |AgNO3 (Ag+) |Pb(NO3)2
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concentration and pH. Students are to visualize the virtual lab as an actual lab and conduct the experiment as such. Purpose This investigation will determine the effects of substrate concentration and pH on the initial rate of an enzyme-catalyzed reaction. Materials Computer Pencil/pen Enzymes at various pH Substrates at various concentrations Procedures 1. Go to this link ( http://www.mhhe.com/biosci/genbio/virtual_labs/BL_11/BL_11.html 2. Click the TV/VCR. Then click the play button
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Laboratory Reports Name : Ellene C. Gabane III-Malinis Group mates Name : Date : March 14,2014 Hazel Gubuan Searl Paul Escalona Rachel joy Canilas Jhon Rex Benico Rochelle Lasic Katherin Mendoza Karen Jeane Banatao Activity #1 Evidences of Chemical Change Name : Ellene C. Gabane III-Malinis Group
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Week 6 DQ 2 · What are two techniques used to solve systems of linear equations? Which do you feel is better? Explain why. Write a system and show us how you would use your favorite solution method. The two symbolic techniques used to solve linear equations are substitution and elimination methods. The substitution method consist of solving for one of the variables in one of the equations, then substituting the value/solution of that variable into the other equation, which when solved will
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equation for the reaction (if any) that occurs when aqueous solutions of Na2CO3 and HCl are mixed. | | 2 H+(aq) + CO32-(aq) H2CO3(s) | | | 2 Na+(aq) + CO32-(aq) + 2 H+(aq) + 2 Cl-(aq) H2CO3(s) + 2 NaCl(aq) | | | 2 H+(aq) + CO32-(aq) H2O(l) + CO2(g) | | | 2 Na+(aq) + CO32-(aq) + 2 H+(aq) + 2 Cl-(aq) H2CO3(s) + 2 Na+(aq) + 2 Cl-(aq) | | | No reaction occurs. | 1 points Question 5 Write balanced complete ionic and net ionic equations for the following reactions: AgNO3(aq) +
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Investigating Rates of Reaction between Hydrochloric Acid and Magnesium Introduction What is Rate of Reaction? The reaction rate or rate of reaction for a reactant or product in a particular reaction is intuitively defined as how fast a reaction takes place. For example, the oxidation of iron under the atmosphere is a slow reaction which can take many years, but the combustion of butane in a fire is a reaction that takes place in fractions of a second. In this case how fast Magnesium reacts
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act as biological catalysts. An enzyme can act to speed up or regulate the rate of the reaction, in order to maintain an efficient rate of biological reactions. Enzymes, whilst having an important role in the reaction of many chemicals within the body, are not consumed in the reaction, and so are able to catalyze many reactions in their life cycle. Enzymes are able to reduce the activation energy of the reaction; the energy required to break bonds between the reactants, and form new bonds in the
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Practical 12 : Rate Of Reaction Name : AFNAN BIN ABDUL RAHMAN Class : M11J Research Question : How does the reaction between Zinc metal and 0.1M of Hydrochloric Acid using different sizes of Zinc metal (Powdered Zinc, Shredded Zinc strip and Zinc strips) can affect the volume of Hydrogen gas produced at the end of the experiment (after 10 minutes) under same temperature which is room temperature? Variables : Manipulated : Different sizes of Zinc Metal Responding : Volume of Hydrogen Gas
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All rights reserved. Course Description This course will examine the basic principles of chemistry conceptually and specifically. The course will apply chemical concepts to address relevant issues ranging from atomic structure and chemical reactions to organic and biological chemistry. The course topics include matter and energy, chemical bonding, intermolecular forces, chemical equilibrium, and nuclear, organic, and biological chemistry. Students will apply these concepts using practical examples
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10/07/2013 Experiment 5: Wittig Reaction Purpose The purpose of this experiment is to synthesize trans-9-(2-phenylethenyl) anthracene using a wittig reagent formed by reacting phosphonium chloride with base. Experimental In a reaction tube, (0.200g) benzyltriphenyl phosphonium chloride, (0.115g) anthraaldehyde, and (.6ml) dichloromethane (DCM) is mixed together with a stir bar. We stirred the mixture rapidly and added (0.26ml) of a 50% NaOH solution dropwise
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