components in a mixture‚ specifically sodium chloride and silica‚ and find the correlating percent composition of each. Abstract: This experiment consisted of the separation of sodium chloride and silica. The mixture was separated by extracting the sodium chloride with water and drying both substances. Adding water to the mixture‚ stirring‚ then decanting the resulting liquid twice extracts the dissolved sodium chloride from the silica. Heating both sodium chloride and silica separately provides the
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PHYSICAL PROPERTIES OF THE PERIOD 3 OXIDES These pages explain the relationship between the physical properties of the oxides of Period 3 elements (sodium to chlorine) and their structures. Argon is obviously omitted because it doesn’t form an oxide. A quick summary of the trends The oxides The oxides we’ll be looking at are: |Na2O |MgO |Al2O3 |SiO2 |P4O10 |SO3 |Cl2O7 | | | | | |P4O6 |SO2 |Cl2O
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next (negative ion) Use criss-cross rule to balance for an electrically neutral compound. Name Symbol and Charge Na+ Mg2+ ClO2Formula NaCl MgO 1. 2. Sodium cloride Magnesium oxide Calcium bromide Aluminum sulphide Nickle (III) chloride (indicates charge) 3. CaBr2 4. Al3+ Ni3+ S2Cl- Al2S3 5. NiCl3 6. Sodium thiosulphate (complex ion) Na2S2O3 7. Aluminum silicate (complex ion) Al2(SiO3)3 (must bracket a complex ion with a subscript) 8. Ammonium
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In this experiment an alloy of silver will be analyzed to determine its silver content. The silver-copper alloy will be dissolved in nitric acid‚ the silver will be precipitated as silver chloride‚ and the silver chloride will be filtered‚ washed‚ dried and its mass determined. From the mass of the silver chloride formed and the mass of the original sample‚ you will be able to calculate the percent of silver in the alloy. Because the results are based on the mass of a product‚ this procedure is classified
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solid sodium oxide is added to water at room temperature to yield sodium hydroxide . (Check the Solubility Rules to determine the phase of matter of sodium hydroxide.) Na2O (s) + H2O (l) → 2 NaOH (aq) 2. Translate the following chemical equation into a sentence. PbCl2 (aq) + Na2CrO4 (aq) → PbCrO4 ↓ + 2NaCl (aq) Aqueous solutions of lead (II) chloride and sodium chromate react to yield solid lead (II) chromate and aqueous sodium chloride
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Abstract This experiment introduces magnetism‚ evaporation and filtration as ways to separate mixtures. Temperature when soluble Sand N/A Iron N/A Sodium Chloride 400F Benzoic Acid 100F Experiment and Observation After gathering all the material needed to conduct these experiments‚ the first experiment was initiated. The mixture of solids was weighed out as well as the 10cm square piece of paper and the weighing dish. The mixture was spread out in a very thin layer on a piece
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contains ionic bonds. Otherwise‚ it likely contains covalent bonds. This was the hypothesis I posed at the beginning of the experiment. The independent variables used in this experiment were the tested substances (oil‚ cornstarch‚ sodium chloride‚ and sodium bicarbonate). The dependent variables in this experiment were the concluded properties of said substances. These included state of matter‚ appearance and texture‚ whether or not it had a crystalline
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QUESTION What is the effect of osmosis on the mass (g) of solanum tuberosum L. (potatoes) after duration of 24 hours in varying concentration levels (2%‚ 5%‚ 10%‚ 20% and 25%) of sodium chloride (table salt)? HYPOTHESIS Solanum tuberosum L. final masses will decline as the concentration (2%‚ 5%‚ 10%‚ 20% and 25%) of sodium chloride increases. Potato slices placed in distilled water will have higher mass percentage due to the cells becoming turgid. BACKGROUND INFORMATION Diffusion is the movement of
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in which a solid passes directly to the gaseous state and back to the solid state without the appearance of the liquid state is called Sublimation. Experimental: The materials that we use it in this experiment are unknown mixture of sodium chloride‚ ammonium chloride‚ and silicon dioxide. Also‚ we use some apparatus such as balance‚ tongs‚ evaporating dishes (2)‚ watch glass‚ 50 or 100 ml graduated cylinder‚ clay triangles (2) or wire gauze (2)‚ glass stirring rods‚ ring stands (2)‚ iron rings
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Purpose: The purpose of the experiment is to calculate the enthalpy change occurring in the first of reaction of sodium hydroxide with hydrochloric acid and sodium hydroxide with ammonium chloride. Using Hess’ Law and the results for the enthalpy change of the first two reactions should give the enthalpy change of the third reaction of ammonia with hydrochloric acid. Procedure: Part 1: Construct a calorimeter of two nested stereophony cups where the cover has a hole to fir a thermometer. Measure
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