Equations: 1) Cu + 4H+(aq) + 2NO3-(aq) Cu2+ + 2NO2 + 2H2O 2) Cu2+(aq) + 2-OH(aq) Cu(OH)2 3) Cu(OH)2 + heat CuO + H2O 4) CuO + H2SO4 Cu2+(aq) + SO42-(aq) + H2O 5) Cu2+(aq) + Zn Cu + Zn2+(aq) Stage 1- Dissolution of Copper Mass of vial & copper = 3.537g Mass of vial = 2.505g Mass of Copper = 1.032g Moles of copper = mass (g) ÷ (63.5g/mol) = 0.0162 mol (3s.f) Copper description: Initially‚ the copper was a solid that was
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the weight of a post 1982 penny? 2.5 grams 2. What is the percent copper and zinc in a post 1982 penny? 97.5% Zn and 2.5% Cu 3. How many grams of copper and zinc are in a post 1982 penny? (2.5)(.025)= 0.0625 grams of Copper and (2.5)(.975)= 2.4375 grams of Zinc 4. How many moles of copper and zinc are in post 1982 pennies? 5. Write a balanced reaction of zinc with HCl. Zn (s) + 2HCl (aq) ZnCl2 (aq) +H2 (g) 6. How many moles of HCl are needed to react completely with all of the zinc
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pieces into blue copper sulphate solution? b) Some copper pieces into green ferrous sulphate solution? c) An iron nail into blue copper sulphate solution? Q2.Complete and balance the following equations: a) Zn + O2 b) Pb + O2 c) Cu + O2 d) Mg + H2O e) Al + HCl f) MgO + H2O g) K2O + H2O h) Cu + HCl __________________ _____________________________ _____________________________ ______________________ _____________________ ____________________ __________________ ___________________ Q3. Give
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HCI Dilute NaOH Mg Silvery‚ white Metallic Intense light N/A malleable Red to blue None None Cu Reddish Metallic Dull glow N/A malleable‚ ductile Blue to red dissolve dissolve Zn Pale gray Metallic N/A below 110*C N/A N/A none None None MgO white ammonia N/A Creates Mg(OH)2 Creates Mg(OH)2 Red to blue None None CuCO3 Dull white Odorless None Dissolves Dissolves Red to bleach Dissolve Dissolve Cu(NO3)2 Blue crystals Odorless None Dissolve Dissolve Red to blue Dissolve Dissolve NaCl None‚ crystals
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Zinc hydride AgI Silver iodide SrS Strontium sulfide Ca3N2 Calcium nitride K2Te Potassium telluride Na3N Sodium nitride CaC2 Calcium carbide LiH Lithium hydride Mg3P2 Magnesium phosphide Memorize your fixed charge metals!!!! Group 1A‚ 2A‚3A and Al+3‚Zn+2‚ Cd+2 and Ag+1 II. Inorganic Nomenclature Compound Type Variable Charge Metal Binary Salts Description Variable Charge Metal + a Nonmetal Examples FeCl2 and FeCl3 Stock System Rule: Full Name + a Roman Numeral + The Stem of +
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1 Metallobiomolecules 1. Transport and Storage Proteins: Molecular part is belongs to the group of Proteins‚ but they are not enzyme and perform the transport and storage function. Myoglobin (Fe)‚ Hemoglobin (Fe)‚ Hemocyanin (Cu)‚ Cytochromes (Fe) and Blue copper (Cu) Proteins are some examples. 2. Enzymes: Molecular part is belongs to the group of Proteins‚ and also they are enzymes. They perform the catalytic function. According to the type of
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and wells. Data Tables: Substance Name Color Odor Heat Effect Cold H2O Hot H2O Litmus Test Dilute HCl Dilute NaOH Mg Silver None None None Not soluble‚ small bubbles Red litmus paper Heat; smoking None Cu Gold Pungent Gas evolution None Not soluble Red litmus paper Nothing Cold Zn Silver None None None Not soluble Red litmus paper Cold Cold MgO White Pungent None Soluble‚ mixes Separates mixture‚ and then returns Red
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HOW ARE REDOX REACTIONS DIFFERENT? Redox is the term used to label reactions in which the acceptance of an electron (reduction) by a material is matched with the donation of an electron (oxidation). A large number of the reactions already mentioned in the Reactions chapter are redox reactions. Synthesis reactions are also redox reactions if there is an exchange of electrons to make an ionic bond. If chlorine gas is added to sodium metal to make sodium chloride‚ the sodium has donated an electron
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Copper and Molybdenum Deposits in the United States Copper and molybdenum resources were not recognized as valuable commodities until economic needs demanded the collection and processing of these minerals in large amounts. The most expansive deposits of copper and molybdenum occur in massive low grade ores and are found in intrusive porphyry formations‚ although many smaller sized but higher grade ores are located in non-porphyry areas. The nation has abundant domestic copper ore reserves but
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In this lab we studied stoichiomentry. We also reviewed the mole-mole relationship between copper and iron in a chemical reaction. The stoichiomentry of mass is that during the heating the experiment does loose mass .This mean that mole and mass did change. An Example of real world is Masses and volumes of products are extremely important in key reactions such as the deployment of air bags in vehicles‚ carbon dioxide production to help bread rise‚ and the Production of ammonia gas for industries
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