Acid precipitation affects stone in two ways: dissolution and alteration. The calcite dissolves when sulfurous‚ sulfuric‚ and nitric acids in polluted air react with the calcite in marble and limestone. Exposed areas of building and statues develop rough surfaces. Some of the material that makes them up are removed or corroded‚ thus‚ details and carvings are lost. Even sheltered areas of stone buildings and monuments are affected by acid precipitation. However‚ sheltered areas on limestone
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resulting in the formation of a precipitate. In solution chemistry‚ the term precipitate is used to describe a solid that forms when a positive ion (cation) and a negative ion (anion) are strongly attracted to one another. In this experiment‚ a precipitation reaction will be studied. Stoichiometry will then be used to investigate the amounts of reactants and products that are involved. The word stoichiometry is derived from two Greek words: stoicheion (meaning “element”) and metron (meaning “measure”)
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4.1 & 4.2: General properties of aqueous solutions and Precipitation Reactions: 1. (Brown 4.11) When asked what causes electrolyte solutions to conduct electricity‚ a student responds that it is due to the movement of electrons through the solution. Is the student correct? If not‚ what is the correct response? 2. (Brown 4.15) Specify what ions are present in solution upon dissolving each of the following in water: a. ZnCl2 c. (NH4)2SO4 b. HNO3 d. Ca(OH)2 3. (Brown 4.16 ) Specify
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Determining the Limiting Reactant and Percent Yield in a Precipitation Reaction Objectives: Observe the reaction between solutions of sodium carbonate and calcium chloride. Determine which of the reactants is the limiting reactant and which is the excess reactant. Determine the theoretical mass of precipitate that should form. Compare the actual mass with the theoretical mass of precipitate and calculate the percent yield. Materials: Balance 0.70 M sodium carbonate solution‚ Na2CO3(aq)
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ch1 Student: _______________________________________________________________________________________ 1. xxWhich one of the following is a "substance" in the sense of the word as used in your textbook? A. B. C. D. E. air tap water sea water water toothpaste 2. Select the best statement. A. B. C. D. E. Physical changes may be reversed by changing the temperature. Physical changes alter the composition of the substances involved. Physical properties are not valid characteristics
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Use of ScaleSoftPitzer to calculate deposition‚ or precipitation‚ in a reservoir or core material during long term flow. Approach will be presented in four steps: 1. Determine whether equilibrium‚ kinetics‚ or mass transport is controlling‚ 2. Relate precipitation to the physical variables in the field or laboratory core‚ 3. Relate the physical variables that affect scale formation or dissolution to space and time in the reservoir or core material‚ and 4. Combine the two into a single
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filtration‚ centrifugal separation & precipitation washing 2. To understand the relation between precipitation state % precipitating conditions 3. To learn the way to examine whether reactants are fully precipitated 4. To learn the principals of powder material synthesizing through room temperature solid phase method & liquid phase method directional growing crystal form of precipitation Experiment Principals 1.the process of precipitation forming constitutive crystal ion accumulating
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My behavior dictates whether or not I become a victim; or more specifically‚ whether or not I seem to be tempting my attacker dictates whether or not I will be attacked. According to the theory of victim precipitation‚ in active precipitation‚ victims provoke their attackers by tempting them to attack. In my opinion‚ I found it rather interesting that in studies of this theory‚ homicide‚ rape‚ and feminism go hand in hand when merely talking of the subject. What sparked my interest of this specific
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Resources: University of Phoenix Materials: Temperature and Precipitation‚ Intraspecific Competition‚ and Interspecific Competition located on your student website Imagine you are an ecologist studying ecosystems. In this assignment‚ you are given three separate sets of data to study. *Note: You do not have to relate the information in the three sets of data to one another. Review the Temperature and Precipitation data‚ Intraspecific Competition data‚ and Interspecific Competition
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The Effects of Acid Rain on Plant Growth PURPOSE The purpose of this experiment was to determine to what degree acid rain affects the growth of certain plants. I became interested in this idea because I’m worried about our environmental conditions and it sounded very interesting to me. The information gained from this experiment may be used to as a warning to stop air pollution. HYPOTHESIS My hypothesis is that the plant watered with the acid solution will grow more slowly than plant’s
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