learn filtering techniques. Specifically‚ to form and filter a calcium carbonate precipitate using a Buchner funnel. Procedure: a.) Prepared a mixture of .5 M calcium nitrate (45 mL) and .01 M sodium carbonate by combining and stirring the two liquids in a beaker. Allow the mixture to stand. b.) Prepare the filtration assembly. The assembly consists of a tapered flask with a buchner funnel inserted in the top. The funnel has a rubber stopper attached to its stem in order to properly fit into the
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liquefaction (condensation) of a gas‚ which is the result of a number of molecules being pressed together to produce forces of attraction high enough to give a liquid structure. Cohesion in liquids is reflected in the surface tension caused by the unbalanced inward pull on the surface molecules‚ and also in the transformation of a liquid into a solid state when the molecules are brought sufficiently close together. Cohesion in solids depends on the pattern of distribution of atoms‚ molecules‚ and
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faster than the diffusion in liquid phase due to the small spaces between the molecules that hinder other molecule movement. Other factors that will effect the diffusion are temperature‚ density‚ concentration and other external factors. 1. INTRODUCTION This experiment has been designed for students experiment on the technique of determining diffusivity of the vapor of a volatile liquid based on the established Winkelmann’s method. In this method the volatile liquid is allowed to evaporate in a
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In “The Fracking Truth‚” Chris Faulkner argues that fracking has almost no consequences. Perhaps the strongest argument that Faulkner gives for this claim relies on three claims that (1) subsurface contamination from fracking is almost impossible‚ (2) low concentrations of any harmful chemicals used in fracking would be negligible and (3) earthquake activity caused by fracking are nearly moderate to small. In this paper‚ I will argue that this argument fails because there are many consequences of
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DESIGN LAB Factors Affecting the Solubility of a Solid in a Liquid In this experiment‚ my goal is to determine the affect of temperature in the solubility of a solid in a liquid. Research Question: How does the change in the temperature affects the solubility of a solid in a liquid? Independent variables: Temperature of the Solution Dependent variables: The solubility of the solid substance Controlled Variables: * The pressure of the room. * The mass of zinc chloride
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purify all types of liquids from impurities. Filtered oil is considered to be completely pure and fresh and good for health benefits. After the filtration process of oil is done‚ refining it is not compulsory. All kinds of oil seeds do not require refining and are known for their edible properties. However‚ oil that is extracted from cotton seeds require refining or neutralizing. In order to filter the extracted oil from impurities‚ a special type of equipment is used.The liquid that has to be
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covalent compounds? What is the reason for this difference in melting points? (3 points) 2. Do ionic compounds conduct electricity as: (3 points) a. Solids? b. Liquids? c. Aqueous solutions (when the ionic compounds are dissolved in water)? 3. Do covalent compounds conduct electricity as: (3 points) a. Solids? b. Liquids? c. Aqueous solutions (when the covalent compounds are dissolved in water)? Part II: Lab Insert completed data tables for each part of the lab. Be sure that the data
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or stretch the surface of liquid. Water has a greater surface tension of most liquids Vector-Transporter‚ “in transit” water is a vector for diseases Cholera-parasite/deadly. Caused by a bacteria called Vibrio (vomiting and diarrhea at the same time‚ majority of the people die in 7 days‚ rapid dehydration) Hydrogen Bonds-Between molecules‚ NOT atoms‚ also the reason why water has a high/strong surface tension. Heat of Vaporization-the quantity of heat a liquid must absorb for 1 g of it
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while it undergoes a phase change‚ we can see that our sample changed from a sold to a liquid at 46.0°C. This is the temperature of the sample between time periods t1= 130s and t2= 480s. In order to find the Heat of Fusion (∆H Fusion) of sodium thiosulfate we used to calculate how much energy the water bath lost during the sample’s melting period. That energy is what melted the sample. The water was a liquid and we can find out how much energy it lost if we know the number of moles of water (n[pic])
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exchange Chromatography Ion exchange chromatography is a process for separating proteins and other molecules in a solution based on differences in net charge. Ion Exchange Chromatography relies on charge-charge interactions between the proteins in your sample and the charges immobilized on the resin of your choice. Ion exchange chromatography can be subdivided into cation exchange chromatography‚ in which positively charged ions bind to a negatively charged resin; and anion exchange chromatography‚ in
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