zinc and copper mixtures‚ which have 11 groups. Determining the volume of the zinc and copper mixtures each‚ and record the data. Using equation get the density of the pennies. Compare the results. Find the best-fit straight line. Material: 0%Cu—100%Cu 0%Zn—100% Zn 5‚ 10‚ 20‚ and 30 pre 1982 pennies. 5‚ 10‚ 20‚ and 30 post 1982 pennies. Graduated Cylinder Procedure: Weight the mass of the different percentages of zinc and copper mixtures. Determining the volume of the different percentages
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experimental method produces more accurate result. One was electrochemistry using a Daniel cell and the other one was spectrometry by estimating concentration of complex solution using a calibration curve. The formation constant of cupric ammine complex Cu(NH3)42+‚ Kf‚ came out with 1.93x10^15 using electrochemical cell method and 9.79x10^12 using spectrophotometer method. Considering the literature value of Kf is around 4.8x10^12 ~ 1.7x10^13‚ spectrophotometer gives more accurate result than electrochemical
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solution. Most solids that are commonly referred to as "insoluble" are actually slightly soluble and will produce an equilibrium between undissolved solid and ions in solution. For example‚ when copper (II) iodate (Cu(IO3)2) is placed in water‚ the following equilibrium is established. ( 1 ) Cu(IO3)2(s) Cu2+(aq) + 2 IO3-(aq) The equilibrium constant associated with this reaction is called the solubility product constant and is given the symbol Ksp. ( 2 ) Ksp = [Cu2+][IO3− ]2 It is important to
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colorimetry. Anhydrous copper sulfate (CuSO4) is white‚ which means that it does not absorb light in the visible region of the spectrum. The hydrated copper sulfate (CuSO4 - 5H2O) is blue. The structure of the compound can be represented more accurately as Cu(H2O)4 SO4 - H2O where four water molecules are bound to the copper ion and the fifth is a water of crystallization. The water molecules are arranged at the corners of a square‚ with the copper at the center. Such an arrangement is called square coplanar
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avoc ado & cu cu mber/ t o biko. 8 SEARED HAMACHI aged m is o‚ mic ro was a b i ‚ p i c k l e d j a l a p e no. 9 ALASKA sal mon‚ avoc ado & cu cu mber. 8 NEW YORK shr imp‚ avo c ado & cu cu mber. 8 SALMON SKIN sal mon skin‚ cu cu mber‚ shiso‚ kaiw are‚ gob o & ponz u. 8 ROCK ‘N ROLL bbq eel ‚ avo c ado & cu cu mber/ eel sauc e. 8 SPICY TUNA‚ HAMACHI‚ OR SCALLOP cu cu m b e r & ka iwa re. 9 TEMPURA SHRIMP kaiw are & avo c ado / sp ic y aio l i. 11 DRAGON t emp u r a shr imp‚ cu cu mber & avo
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as being tall‚ handsome‚ blond‚ jovial and graceful‚ but among all those things his principal quality was his chivalric way of life. The author of William Marshal’s chronicle says that but for the Henry the Young chivalry would have been dead (vv. 2640-41). The Young King’s reputation as a patron of young landless knights increased with his continuously participation in different tournaments. We have to remember that tournaments were prohibited in England by Henry II and the whole chivalric attitude
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evolution or absorption of heat or even change in color. This experiment aims to observe the different chemical changes copper undergoes in different conditions. II. METHODOLOGY 1. Precipitation of Copper (II) Hydroxide Materials used: 0.100 M Cu(NO3)2 solution‚ 250-mL beaker‚ 6.00
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appearance of metallic deposits on the surface of the metal stip. TABLE 1: Chemical Reaction SOLUTION and METAL EVIDENCE of REACTION PRODUCT 1. AgNO3 + Cu deposits of Ag —> Ag + Cu(NO3)2 2. Cu(NO3)2 + Pb deposits of Cu —> Cu + Pb(NO3)2 3. Pb(NO3)2 + Zn deposits of Pb —> Pb + ZnNO3 4. MgSO4 + Zn no reaction —> no reaction 5. HCl2SO4 + Cu no reaction —> no reaction 6. HCl2SO4 + Zn deposits of H —> H2 + ZnCl2 TABLE 2:
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4CG-5235 07 JULY 2012 A. CORROSION GROUP DATA Corrosion Group ID Corrosion Group Name Process Service Material of Construction Corrosion Group Description 4CG-5235 Sea Cooling Water Sea Cooling Water Piping(CS‚cement‚U.G/A.G);Tube(Al Br)‚Channel(Cu) The group consist of sea cooling water supplied to all sea cooling water exchanger in Module 4. Unit 5200: Sea cooling water to various heat exchangers with temperature range between 30 to 50 degC and pressure 3barg Sea Cooling Water (SCW) exchangers
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Materials: Measuring cylinder‚ suction filter‚ measuring cylinder‚ beaker‚ conical flask‚ petri dish‚ glass rod‚ copper(II)nitrate‚ water‚ ammonia‚ acetyl acetone Procedure: 1. 6g of Copper(II) nitrate (Cu
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