After concluding the experiment‚ I learned that the products reaction can be created in precise amounts when the masses of the products can be measured to exact standards. Further‚ I learned more about the molarity of aqueous solutions‚ and how that quantity‚ along with the volume of the solution‚ can be manipulated to find the exact number of moles in a given volume. In this case‚ experimenters were given aqueous solutions of NaOH and CaCl2 in known molarities and then had them react with one another
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Chemistry Lab Report Water Hydration Introduction: A hydrated crystal or hydrated occurs when water becomes tightly attracted to a metal salt base on it’s polarity. The water molecules maintain integrity as molecules‚ however they are considered to be part of the formula of the hydrate. When the hydrate metal salt crystal is heated‚ the attractions to the water are broken by the heat energy and the water escape from the crystal. After heating the salt crystal is called as anhydrous‚ which
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Purpose: The purpose of this lab is to test what substances are necessary for muscle contraction. Hypothesis: Based off the frog muscle immersed separately in Solution A of ATP and distilled water solution‚ Solution B of ATP with KCl in distilled water and MgCl2 in distilled water and solution C of KCl and MgCl2 in distilled water‚ I hypothesize that solution B of ATP with KCl in distilled water and MgCl2 in distilled water will cause the muscle to contract. Introduction: This lab consisted of
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Law of Conservation of Mass Lab Introduction- Problem: To validate the law of conservation of mass and to examine what happens when one Alka- Seltzer tablet is combined with water. Hypothesis: If the Alka-Seltzer tablet is combined with water‚ then Co2 will be produced because when mixing the two compounds‚ a chemical reaction will occur. Materials: -Alka-Seltzer tablet -Balance (Grams) -Balloon -Flask (125 mL) -Water -File -Forceps -Massing tray Procedure:
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Chemistry 12 - Lab 19A Flow Chart (Investigating Chemical Equilibrium) PART 1: Put on safety goggles and lab apron Obtain 2 (Empty‚ Clean‚ AND DRY) 250mL Erlenmeyer flasks. Add approx. 100mL of DISTILLED water and 1mL of thymol blue solution to each flask Record the colour of this solution in note book FIRST FLASK: add a single drop of 0.1M HCl. Swirl the contents of the flask and continue drop-by-drop addition until a definite colour change is observed. SECOND FLASK: will serve as
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THE CHEMICAL EARTH: 1. The living and nonliving components of the Earth contain mixtures ● Construct word and balanced formulae equations of chemical reactions as they are encountered Reactants → products Chemical reaction: the way atoms are joined changes‚ atoms are not created nor destroyed‚ but are rearranged Indicators: emission of light or heat‚ odour formation of a gas formation of a precipitate colour change change in state aqueous = dissolved in water‚ an aqueous solution
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The intent of this experiment is to demonstrate the formations of the world oceans and why they are salty. I hope to learn more about the formations of the world oceans and what causes the oceans to be salty. Based on my research‚ I know that if salty water was put on black paper and left outside in the sun‚ the water would evaporate but the salt crystals would stay. The salt would not evaporate because it is a solid. Knowing this I formed a hypothesis‚ being‚ if salty water was poured on black paper
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In this experiment‚ equilibrium will be examines in the reaction beteween the iron (III) ion and the thiocyanate ion: Fe3+ (aq) + SCN- (aq) ------ FeSCN2+ (aq) The FeSCN2+ complex ion has a blood red color while the iron and the thiocyanate ion are colorless. Therefore‚ the shift in the reaction can followed by noting a change in the intensity of the clood red color‚ which indicates a change in the concentration of the complex ion FeSCN2+. If the reaction shifts to the right‚ the blood red color
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Discussion The data supported the hypothesis that if Daphnia are placed in differently concentrated solutions of barium and calcium chloride‚ then the highest concentration of calcium chloride would affect them the most because of the production of hydrochloric acid and calcium oxide from the mixing of water and calcium chloride‚ two very dangerous acids‚ with the highest concentration having the biggest chemical reaction. Within five minutes of putting the Daphnia into the 10 (ppt) solution of
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The Diels-Alder Reaction Submitted by: Joe Student Partner: Jill Student Date: February 8‚ 2005 TA: Super TA Reaction +OOOxylene140 oCOOO Data Table Reagents MW Grams used Lit. Mp Anthracene 178.23 g/mol 1.023 g 216-218ºC Maleic anhydride 98.06 g/mol 0.497 g 54-56ºC Products MW Grams obtained Lit. Mp Observed Mp Crude product 276.29 g/mol 1.362 g 261-262ºC 260.2-261.3ºC Recryst. Product 276.29 g/mol 1.283 g 261-262ºC 261.3-261.9ºC Results and Discussion Discuss the
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