Stoichiometry Essays

  • Mass And Mole Relationships In A Chemical Reaction

    949 Words  | 4 Pages

    ratio of moles of one substance to the moles of another substance in a balanced equation. Mole ratio is considered a conversion factor since it helps to convert units with the use of moles. It is used in stoichiometry and other calculations and comes out of the balanced chemical equations. Stoichiometry is the measurement of elements that concerns the chemical quantities produced or taken in a reaction. The process of relating the mass and mole quantities of reactants or products in a reaction. It uses

  • Introduction To Stoichiometry

    1709 Words  | 7 Pages

    Introduction to Stoichiometry What does stoichiometry mean? Before trying to understand what stoichiometry means, you first need to know what chemistry deals with. Chemistry is a branch of science that deals with matter and all the change in composition it undergoes. Now, along the long line of the history of chemistry, scientists have used symbols, formulas, and equations to indicate the elements present, the relative amounts of elements, and the variety of combinations of atoms during a chemical

  • Catnip Analysis

    876 Words  | 4 Pages

    GC/MS analysis was detected the 9 compounds in catnip essential oil, which included sabinene, β-Pinene, Z-β-ocimene, E-β-ocimene, trans-caryophyllene, caryophyllene oxide and three isomers of iridoid nepetalactone. These compounds were composed 99.3 % of the essential oil components. The nepetalactone isomers were included (4a-α,7-α,7a-α)-nepetalactone (6.25 – 16.83 %), (4a-α,7-α,7a-β)-nepetalactone (85.41 - 71.4 %) and (4a-α,7-β,7a-α)-nepetalactone (4.96 - 7.24 %). These isomers were the major constituents

  • Daguerreotype Image Processing

    514 Words  | 3 Pages

    Daguerreotype image processing was created in 1837 by Louis-Jacques-Mandé Daguerre who was most famously known as a romantic painter, but quickly become the “Father of Photography”. Sadly the life of Daguerre and most of his work was lost in a fire that caught inside his laboratory on March 8, 1839. Less than 25 pieces are left of Dauguerre work between his paintings and photographs. Most of these are kept at various museums and galleries in England.  The Daguerreotype is created by the use of

  • Emmett Teller Analysis

    873 Words  | 4 Pages

    . Experimental 2.1 Catalyst preparation In this paper we have to use different types of nitrate precursors to preparation of the catalysts. The precursors we used to preparation of the catalysts are cobalt nitrate, cerium nitrate, copper nitrate and manganese nitrate. All the chemicals are used for manufacturing of the catalyst are A.R. grade and they are purchased from Otto Chemie Company. The different types of nitrate precursors was used to preparation of the catalyst and they are dried at 120°C

  • Baclofen Essay

    1745 Words  | 7 Pages

    Results and Discussion 3.1 Characterization of Baclofen 3.1.1 Baclofen melting point: The measured melting point of Baclofen was found to be 207°C.This result is the same as reported in references, which indicates the purity of the drug powder used in the study (27). 3.1.2 Baclofen λ max: Scanning of Baclofen solution (100μg/ml) in phosphate citrate buffer (pH 7.4) by UV spectrophotometer at 200-400 nm gave the spectrum Shown in figure () .The maximum absorbance (λ max) found to be 220nm, which

  • Lab Report Balanced Chemical Equation

    2042 Words  | 9 Pages

    1. For the demo experiment, the balanced chemical equation is as follows: (NH4)2Cr2O7(s)=Cr2O3(s)+N2(g)+4H2O(g). After the lightning of Ammonium dichromate, Chromium (III) oxide was formed while the Nitrogen and Water escaped into the atmosphere in a gaseous phase. Ammonium dichromate((NH4)2Cr2O7) gave rise to Chromium (III) oxide (Cr2O3), Nitrogen Gas(N2) and water (H2O) In terms of microscopic level, the ratio between reactants and products is as follows. One mole of Ammonium dichromate will give

  • Hydrochloric Acid Analysis

    2159 Words  | 9 Pages

    2. Experimental procedure 2.1. Chemicals and materials Melamine (99%), titanium dioxide with anatase (99.7%), isoniazid (ISN, >99%), isopropanol anhydrous (IPA, 99.5%), 1, 4-benzoquinone (BQ, ≥98%) and ammonium oxalate (AO, ≥99%) were purchased from Sigma Aldrich. The molecular structure and chemical properties of isoniazid are given in Table 1. Sodium hydroxide (NaOH, 99%) and methanol (MeOH, analysis grade) was purchased from Merck Millipore, Germany. Hydrochloric acid was purchased from PFP Matsunden

  • Tetraphenylnaphthalene Lab Report

    779 Words  | 4 Pages

    Benzyne Formation and the Diels-Alder Reaction Preparation of 1,2,3,4 Tetraphenylnaphthalene Aubree Edwards Purpose: 1,2,3,4-tetraphenylnaphthalene is prepared by first producing benzyne via the unstable diazonium salt. Then tetraphenylcyclopentadienone and benzyne undergo a diels-alder reaction to create 1,2,3,4-tetraphenylnaphthalene. Reactions: Procedure: The reaction mixture was created. Tetraphenylcyclopentadienone (0.1197g, 0.3113 mmol) a black solid powder, anthranilic acid

  • Copper Stoichiometry Lab

    829 Words  | 4 Pages

    procedure one . The final theoretical amount shows the amount of copper that the reaction for the fifth procedure should give you when using stoichiometry to find the amount of copper in that reaction. Conclusion: In conclusion, The results indicate that there was a yield greater than the initial amount. This could be caused by the rounding done when doing stoichiometry. Misinterpretations in the final experimental amount could be because of leftover aluminum wire. However, regardless of the yield being

  • Reflection On Stoichiometry, Composition And Reaction

    1696 Words  | 7 Pages

    Introduction This module is all about Stoichiometry, composition and reaction. I chose this topic not because I am having a really hard time understanding it, but because I want to have a deeper understanding of the lesson. Before actually doing this, I watched some videos on YouTube in order to look for some techniques I can actually apply in doing some written works and execute as an example for this module. In this module, I will focus more on the different techniques on how to convert unit

  • Stoichiometry Research Paper

    1045 Words  | 5 Pages

    world wants to know ‘’how much,” whether it is chemistry or daily activities in life, this question is answered by Stoichiometry. If you have 4 frames and 12 wheels, how many bikes can be made? This is also a concept of stoichometry. The principles of Stoichiometry can also be used while cooking. If you are almost out of a certain ingredient, you could use the concept of Stoichiometry to figure out how much of every other ingredient is needed. Another example is that, a farmer determining how much

  • Stoichiometry Of Copper II + Hydroxide

    1386 Words  | 6 Pages

    Introduction In the late 1700’s, Jeremias Benjamin Richter defined stoichiometry as the "art of chemical measurements, which has to deal with the laws according to which substances unite to form chemical compounds." In this exercise, we combined copper(II) sulfate pentahydrate with two moles of sodium hydroxide which produced copper(II) hydroxide and sodium sulfate (CuSO4 + 5H2O +2NaOH  Cu(OH)2 + Na2SO4). We then dissociated copper(II) hydroxide to produce copper(II) oxide and water (Cu(OH)2

  • Stoichiometry And Limiting Reagents Lab Report

    1237 Words  | 5 Pages

    Verna Wang Hannah Palmer CHEM 101-069 Lab 11-19-16 Stoichiometry and Limiting Reagents Lab Report Purpose: We are using the reaction of sodium hydroxide and calcium chloride to illustrate stoichiometry by demonstrating proportions needed to cause a reaction to take place. Background: Just like a recipe would call for a specific amount of one ingredient to a specific amount of another, stoichiometry is the same exact method for calculating moles in a chemical reaction. Sometimes, we may not have

  • Stoichiometry Of Baking Soda And Sodium Hydrogen Carbonate

    1477 Words  | 6 Pages

    Background: The study of stoichiometry is a branch off Chemistry its the study of the amounts of substances that are involved in reactions. For this experiment kinetics is a huge part of it. Kinetics is explained as the reaction speed and or rate of reaction. To observe these reactions made by having reactants, sodium hydrogen carbonate, NaHCO3 known as baking soda and acetic acid, CH3COOH that is vinegar being mixed together. The products were carbon dioxide, water, and sodium acetate. Because

  • The Importance Of Chemistry

    910 Words  | 4 Pages

    between them. It offers a lot of career jobs, those who want to become doctors, nurses, physicists and (obviously) chemists, should study chemistry. A career that involves chemistry is undoubtedly high paying, statistics will tell you. I find stoichiometry as a moderate-hard subject matter for me, the reason that I chose it is because I want to improve in chemistry. For me, this is another starting point, it requires you to memorize the atomic masses and such, it’s a practice to sharpen one’s memory

  • Reaction Between Sodium Bicarbonate And Calcium Chloride

    3629 Words  | 15 Pages

    reactant is the reactant that limits the amount of product that can be produced in a reaction. An excess reactant is the opposite, or the reactant that remains after a chemical reaction is performed and the limiting reactant runs out (Stoichiometry: Limiting). The stoichiometry calculations determining what should happen can be found in the calculations section. The solid should form calcium carbonate. The uses for calcium carbonate are as a filler and coating pigment in paper, plastics, paints, and coatings

  • Nbcl Synthesis Lab Report

    808 Words  | 4 Pages

    of mixture of master solutions of the drug and reagent were mixed comprising different complementary proportions. Either the relative fluorescence intensity or the absorbance were measured. A blank experiment was carried out simultaneously. The stoichiometry between the drug and NBD-Cl reagent by both methods as shown in Figure 8, it is clear that the ratio is 1:1. Based on this ratio the suggested mechanism of the condensation reaction with NBD-Cl was presented in Scheme

  • Chemical Equation Lab Report

    1151 Words  | 5 Pages

    91.5 lb/72 (molar mass of FeO)) ∴Selectivity of Fe=(10.714 moles Fe)/(1.271 moles FeO)=8.43 (mole Fe)⁄(mole FeO) Example 3.6: Chemical Equation and Stoichiometry Question A common method used in manufacturing sodium hypochlorite bleach is by the reaction: Cl_2+2NaOH→NaCl+NaOCl+H_2 O Chlorine gas is bubbled through an aqueous solution of sodium hydroxide, after which the desired product is separated from

  • The Boys In The Boat

    380 Words  | 2 Pages

    Hello Mrs. Gawne! How has your summer played out? I hope it has been good. This summer I read The Boys in the Boat by Daniel James Brown and I found his details about dedication and team work very tasteful. As I was reading, thoughts of our chemistry class arose and how Daniel James Brown’s descriptions of how teamwork and practice was so crucial to the success of the team in the sport of rowing related to the class in general.