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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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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Kinetic energy is increasing between letters A-B‚ C-D and E-F. Based off the observations‚ in phase A-B Tert-Butyl Alcohol stays a solid‚ in phase C-D Tert-Butyl Alcohol stays a liquid‚ and in phase E-F the chemical stays a gas. This is observed at the particle level because temperature is a measure of Ek; the temperature is increasing which increases kinetic energy. Since Ek is the energy of motion‚ the particles would increase their velocity and the number and force of collisions. However‚ the
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particles ____________________. Short Answer 6. Compare the shape and volume of solids‚ liquids‚ and gases. 7. What two phase changes occur between vapor water and liquid water‚ and at what temperature does each phase change take place? Essay 8. Use billiard balls to model the motion of particles in a gas. Use students in a crowded hallway to model the motion of particles in a liquid. Use an audience in a movie theater to model the motion of particles in a solid. Other USING
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