In order to find the formula of the copper chloride hydrate‚ we had to separate the compound to find the mass of water and copper. To begin this process‚ we evaporated the water and created an anhydrous compound‚ meaning we were left with only CuxCly. By calculating the weight of both the anhydrous and the hydrated compounds‚ we could conclude that the difference in the weights was the weight of the H2O. From this we were able to calculate the percent composition of CuxCly and H2O (see Calculations:
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(HNO3). What is the concentration of the acid solution? Gravimetric Titration: Calculate the molar concentration of Ba2+ ions in a 500.0 mL sample of an unknown aqueous solution if 2.47 g BaSO4 is formed upon the addition of excess Na2SO4? Stoichiometry of Acid –Base Reactions: What volume of 0.800 M HCl is required to completely neutralize 35.0 g of Ca(OH)2? Solution Problems: 1. Consider 125 mL of CaCl2 solution which has the molarity of 0.140M: A. How many moles of CaCl2 are present
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characteristics of firing blast furnace gas (BFG) individually or in combination with coke oven gas (COG) were investigated theoretically and experimentally. The theoretical results showed that at the same heat release rate under the operating conditions of stoichiometry‚ firing BFG individually had a greater amount of fuel gas volume flow rate‚ a smaller amount of air volume flow rate‚ and a lower adiabatic flame temperature than firing BFG with support fuel without preheating. Meanwhile‚ the volume flow rate
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Experiment 5 The Quantitative Determination of an Acid in Carbonated Beverages Thomas Canfield Kelly Caddell Chemistry 144B T.A. Brock Marvin 15 October 2012 Methods: Two sodas containing citric acid were investigated in this experiment. Each soda was titrated using one of the two experimental methods. These methods are the traditional titration and the modern titration. Carbonic acid was already removed from the soda by boiling it. Both of the two different titration methods
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50 mol SO3 (g) E) 0.25 mol SO2 (g) and 0.25 mol O2 (g) 5) The equilibrium-constant expression depends on the __________ of the reaction. A) the quantities of reactants and products initially present B) stoichiometry and mechanism C) mechanism D) stoichiometry E) temperature 6) At elevated temperatures‚ molecular hydrogen and molecular bromine react to partially form hydrogen bromide: H2 (g) + Br2 (g) ⇌ 2HBr (g) A mixture of 0.682 mol of H2 and 0.440 mol
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Background information In the experiment we find the volume of gas produced from a known mass of solid which we are studying in class about Stoichometry and how you solve mass-volume in a equation. Keywords Theoretical volume Experimental volume Stoichiometry Balanced equation Safety tips Make sure goggles are on at all times during the experiment. If you have long hair make sure you have a hair tie because we are using fire. If you accidently spill the chemical on yourself make sure to quickly
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For my mental toughness assignment‚ I have chosen to improve my test taking anxiety. I have always had an underlying fear of failure‚ so even when I study for a test until I practically know every answer‚ I still fear that I will fail it‚ thus giving me anxiety of test taking. This week I have back to back Algebra 2 and Chemistry tests‚ so this will be the perfect opportunity to use the method I learned from the video shown in class. My goal for each test is to receive at least an A‚ or
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ATOMIC WEIGHT OF MAGNESIUM LAB Introduction The main purpose for this experimental lab is to determine the atomic weight of magnesium‚ as well as an underlying purpose in determining the relationship between moles evolved and consumed. This can be demonstrated by measuring the hydrogen gas evolved by performing a chemical experiment when hydrochloric acid reacts with the magnesium. The formulated reaction includes; Mg + 2HCl → H2 + Mg2+(aq) + 2Cl- (aq) The major findings contributing
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Alexandre Beguyer de Chancourtois (1820-1886) oIn 1863‚ a 44 year old French geologist‚ he created a list of the elements arranged by increasing atomic weight. The list was wrapped around a cylinder so that several sets of similar elements lined up‚ creating the first geometric representation of the periodic law. oIn 1862 was the first person to make use of atomic weights to reveal periodicity (i.e. when the elements were arranged according to their atomic weights‚ similar elements seemed to occur
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Investigation 3 Determine the Limiting Reagent Chemistry Investigation 3 Limiting Reagents Aim: To determine the limiting reagent in a reaction. Hypothesis: if the number of moles of the solutions added together equals the stoichiometry ratio in the balanced equation‚ then we would not expect a limiting reagent in the reaction. Independent variable: The number of moles of the reactants Dependent Variable: The limiting reagent Constant Variable: The volume of reactants added Equipment:
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