Certain animals had a mythological and totemic importance in early Ireland. Discuss. Animals‚ both domestic and wild‚ have long co-existed side by side with mankind‚ and there are very few people who do not feel affection towards one kind of an animal or another. The old saying that the dog is man’s best friend has much relevance today as in days gone by‚ but for generations animals where more than just friends and companions‚ as many of them played a central role in the rural economy of the
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Dark Orange LiNO3 Red Sr(NO3)2 Dark Red KNO3 Blue-Indigo Ba(NO3)2 Yellow-Green Cu(NO3)2 Green Ca(NO3)2 Red-Orange Ni(NO3)2 Yellow-Green Materials: Nichrome test wire Bunsen Burner 150 mm test tubes (14) 6.0 mol/L HCl Solid NaCl 0.50 mol/L NaCl 0.50 mol/L NaNO3 0.50 mol/L LiNO3 0.50 mol/L Sr(NO3)2 0.50 mol/L KNO3 0.50 mol/L Ba(NO3)2 0.50 mol/L Cu(NO3)2 0.50 mol/L Ca(NO3)2 0.50 mol/L Ni(NO3)2 50 mL beaker Bunsen Burner lighter
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sulphate and water. 2. Balance the following equation. a. Fe(s)+CuSo4 (aq)---(FeSo4(aq)+Cu(s) b.H2So2(aq)+NaOH(aq)-(Na2SO4(aq)+H2O(l) c.Ba(OH)2(aq)+HBr(aq)-(BaBr2(aq)+H 2O(l) 3.What is differences between combination and decomposition reaction? Explain with examples. 4. Can a displacement reaction be a redox reaction? Explain with examples. 5.Complete and balance a. Cu+AgNO3--(
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The ability to embrace Diversity will enhance one’s ability to collaborate with others as a team to solve or eradicate many social issues or misunderstandings. My own observations and experiences I believe started when I was born‚ my family is very diverse. My mother’s family is multicultural thus diversity was a big influence in my formative years that carried over into whom I am now. Because of this I feel I am a compassionate and observant of others feelings and needs when it comes to how each
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33 g Mass of beaker plus copper 69.43 g Actual yield of copper 2.1 g Expected yield of copper 2.54 g Percent yield of copper -17.32% Calculations: Actual yield of copper = 69.43 g - 67.33 g = 2.1 g Percent yield of copper = 2.1 g Cu - 2.54 g Cu 2.54 g Cu Conclusion: The percent yield of copper is
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------------------------------------------------- ABSTRACT ------------------------------------------------- The copper reaction experiment was demonstrated by adding the reagents like 16M HNO3‚ Distilled water‚ 6M NaOH‚ 6M H2SO4‚ Acetone‚ Zinc metal and Methanol into the beaker with the copper wire. The experiment was also demonstrated to observe how copper reacts while different reagents were being added. It was also demonstrated to practice the common laboratory techniques such as methods
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presence of more oxidizing agents strong enough to react with the iodide. The copper concentration of an unknown copper sample was determined using iodometric titration. The first part of the experiment involved the preparation of the working standard Cu(II) solution of specific concentration from CuSO4•5H2O. A standard sodium thiosulfate (Na2S2O3) solution was also prepared to serve as the titrant for the analysis. Proper handling should be administered for this solution since it decomposes into its
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Copper‚ Cu Lead‚ Pb Zinc‚ Zn Magnesium‚ Mg The following solutions: Copper (II) nitrate‚ Cu(NO3)2 Lead (II) nitrate‚ Pb(NO3)2 Zinc nitrate Zn(NO3)2 Magnesium nitrate‚ Mg(NO3)2 Silver nitrate‚ AgNO3 Fine sandpaper Goggles Lab apron Directions: Fill in your observations from the videos and pictures in the table below. DATA TABLE Aqueous Nitrates Metals Mg(NO3)2 Zn(NO3)2 Cu(NO3)2 Pb(NO3)2 AgNO3 Mg Zn Cu
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ELECTROLYSIS Electrolysis decomposition of compound using electricity Electrolyte an ionic compound which conducts electric current in molten or aqueous solution‚ being decomposed in the process. Electrode a rod or plate where electricity enters or leaves electrolyte during electrolysis. Reactions occur at electrodes. Discharge the removal of electrons from negative ions to form atoms or the gain of electrons of positive ions to become atoms. Anode
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MARKS: 150 TIME: 3 hours This question paper consists of 16 pages and 4 data sheets. INSTRUCTIONS AND INFORMATION |1. |Write your centre number and examination number in the appropriate spaces on the ANSWER BOOK. | | | | | | | | | |Answer ALL the questions
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