• work
    according to equation 6 Get CBSE Syllabus, NCERT Solutions, Sample papers, Practice papers, Guess Papers, Solved Question Papers, Online Tests And Much More… CBSE Class 12th Chemistry Guess Paper 2014 2N 2O5 ( g ) → 4NO 2 ( g ) +O 2 ( g ) This first order reaction was...
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  • discussion
    particular are there other ingredients in the cookie that could take part in the reactions or is the heating different in some way? Sample A and sample B are overlap after fry the paper. Sample B is more browning compare with sample A. Sample A and sample C are not overlap after fry the paper. Sample A...
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  • Lab2
    paper; however, the blue paper got darker on the edges around the saturated area. Dilute HCl: The Mg had an exothermic chemical reaction with the HCl where it began to boil and release gasses upon contact. Dilute NaOH: No effect was observed between NaoH...
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  • Pogi Ako
    especially in red litmus paper that shows a reaction. MATERIALS / REAGENTS & EXPERIMENTAL PROCEDURE For the Group IA & IIA Elements, each small amount samples of Li2CO3, Na2CO3, K2CO3, MgCO3, CaCO3 and BaCO3 was place in the different test tubes. After placing them in the test tubes, we...
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  • Chemistry Guide
    solution (brine) in a diaphragm cell write ionic half-equations for the reactions at the electrodes in the diaphragm cell describe important uses of sodium hydroxide, including the manufacture of bleach, paper and soap; and of chlorine, including sterilising water supplies and in the manufacture of...
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  • Chemical Periodicity
    , Tin, Silicon and Lead. Each sample was placed in a test tube, (one sample and one test tube) and the physical color, appearance and state was defined. Water was used to test the solubility of the element. We use blue and red litmus paper to test the Metal Oxides in Group IIA. A balanced Chemical...
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  • Seperating Metal Cations Using Paper Chromatography
    after exposure to all reactions. As shown from the results of the filter paper samples, we were able to see qualitative changes on Fe, Cu, and Co with the use of potassium ferrocyanide, Fe, Cu, and Co with the use of potassium thiocynate in acetone, and Fe, Co, and Ni with the use of dimethyl...
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  • Chemical Periodicity
    , color and appearance of each element. For Group IIA Metal Oxides Place a small amount of MgO and CaO in different test tubes. Add 10mL water to each sample and test each sample with litmus paper. Write balanced chemical equations for the reaction between the oxides and water...
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  • Fddsfsd
    dependent variables. • important data that will answer the question. • ways to help ensure the accuracy of the results. Materials: Several paper towels, a flat dish, bottled water, a thermometer, a tong, a ruler, and an scale, Procedure: (1) Weigh the sick + water (2) Measure each sample of...
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  • Report
    . | EXPERIMENT 3 TO FIND THE pH OF SUBSTANCES Aim: To find the pH of the following samples by using pH paper/universal indicator:- i. Dilute Hydrochloric Acid ii. Dilute NaOH solution iii. Dilute ethanoic acid solution iv. Lime water v. Water vi. Dilute Sodium bicarbonate...
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  • Testing for Macronutrients
    purple color change indicates a positive reaction. Record results. Lipids Results: 1. Observe the paper towel. A “grease stain” or something similar looking indicates a positive result. Results - Negative + Positive Unknown Sample 1 Unknown Sample 2 Unknown Sample 3 Unknown Sample 4...
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  • To Determine Energy Lost by Calcium Chloride and Gained by Ammonium Nitrate When Dissolved in Water.
    70 ml of room temperature water and weighed it again. We determined the mass of water. We also measured its temperature. 2. We weighed a weighing paper and then sample of calcium chloride. Then we determined mass of sample. We did the same for Ammonium Nitrate. 3. We added the sample and measured...
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  • Labpaq Experiment 1
    absorbing the sample paper towel to it. I should make careful observations of the lab procedures and data tables in order to not miss any details. For not observing the reactions with the food starch, I am not certain where the errors were. Questions and Problems: A. Suppose a household...
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  • Gravimetric
    , 3 funnels, funnel support, plastic wash bottle, 10-mL graduated cylinder, 100-mL graduated cylinder, ring stand, iron ring, wire gauze, 3 stirring rods, 3 rubber policemen, 3 pieces of #1 Whatman filter paper, 3 watch glasses, weighing paper Materials: unknown chloride sample (sample #1), 0.5 M...
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  • Acyl Compounds
    test tube and 6 drops of sample was added to each. The mixture was mixed by shaking, examined, and tested with blue litmus paper. The blue litmus paper turned red on every attempt. 2. Reaction with acid Reaction with 10% NaOH Reaction with NaHCO3 Weak/Strong acid Benzoic acid...
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  • Comparative Study of the Properties of Organic Compounds Through Various Tests
    soluble, soluble, partially soluble or insoluble, depending on its reaction with the solvents. The samples were also tested using litmus paper to classify its acidity, basicity and neutrality. Another test performed was the ignition test which classify the samples to compounds which upon ignition gave...
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  • Electronegativity
    plane can be a paper, serving as such or impregnated by a substance as the stationary bed (paper chromatography) or a layer of solid particles spread on a support such as a glass plate (thin layer chromatography). Different compounds in the sample mixture travel different distances according to how...
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  • Chemical Periodicity
    were identified. For Group IIA Metal Oxides, a small amount sample of MgO and CaO was placed indifferent test tubes. 10 mL H20 was added to each samples and it was test trough the use of litmus paper. A balanced chemical equation for each sample was written to show the reaction of the oxides and...
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  • Chemical Periodicity
    tested of their solubility and reaction to Litmus paper. Both of the compounds were soluble in water and remained blue in reaction to blue litmus paper. The compounds turned to blue in reaction to red litmus paper. This means that the compounds are bases...
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  • Observations of Chemical Changes
    for everyone. Also needed were, a piece of white paper, a piece of black paper, and the chemicals from the Observation of Chemical Changes Experiment Bag. For ever reaction, I wrote down the chemical combination, the well number, and my observations of the reactions against the white and dark...
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