Copper Sun By: Sharon Draper The novel Copper Sun is a searing work of historical fiction and is action-packed‚ multifaceted‚ and character-rich. It describes a young girl’s life that was stolen from her village‚ sold to the highest bidder‚ enslaved‚ beaten‚ and mistreated. It expresses the different emotions that were felt as the girl went through her long and tiresome journey. Throughout‚ the young girl named Amaris journey‚ she encountered several different characters with similar but different
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This experiment will test the suggestion that the enthalpy change between a metal and a solution of a salt is related to the relative position of the two metals in the reactivity. Presumably the further apart in the series the bigger the enthalpy change will be. The experiment is as follows‚ 1) Zn(s) + CuSO4(aq) ZnSO4(aq) + Cu(s) 2) Zn(s) + Pb(NO3)2(aq) Zn(NO3)2 (aq) + Pb(s) Both of the solutions will be in 1mol.dm-3 Apparatus: Distilled Water Polystyrene Cup
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Determination of Water in a Hydrate DESIGN – Aspect 1: Defining the problem & selecting variables Research Question: What percentage of Copper Sulfate Hydrate is water? Background Information: There are many ionic compounds that contain one or more waters of hydration in their formulae. They exists either in anhydrous or hydrated form. Most anhydrous compounds have a strong tendency to absorb water from the humidity in the atmosphere and shifts into a hydrated form. Because of
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Finding the formula of Hydrated Zinc Sulphate Results Table of masses and probabilities | Mass (g) | Uncertainty (g) | Test tube | 46.94 | ±0.01 | Test tube and hydrated sample | 59.94 | ±0.01 | Hydrated sample | 13.00 | ±0.02 | Test tube and anhydrous salt | 54.15 | ±0.01 | Anhydrous sample | 7.21 | ±0.02 | Mass of water | 5.79 | ±0.04 | Calculations to find the Formula of Hydrated Zinc Sulphate * Mr of Zinc Sulphate ZnSO4 = 65 + 32 + (16 x 4) =161
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Measuring the enthalpy change of vaporisation of water You should attempt this part of the activity even if you have not seen the demonstration of the practical. 1. Calculate a value for ∆Hvap for water in KJ mol-1 using the data from the demonstration. Also‚ calculate ∆Hvap from the following data gathered by a student; 8100 J were needed to distil 2.95g of water. a) Explain why the boiling tube was surrounded with expanded polystyrene (or other similar insulation)‚ but the condenser was left
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CH 130 B: General Chemistry I The Lab Report As a scientist you are responsible for conveying the results of an experiment to a supervisor‚ a colleague‚ or the public. Often‚ you will convey this information in the form of a scientific paper describing your work. This paper needs to clearly describe why and how an experiment was done‚ and it must include an interpretation of results‚ including a discussion of their importance and any significant sources of error. You lab report will
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Copper is one of the few metals that have been mined for more than 100 decades globally. According to M.G.C Wilson (1989) copper has been mined since the early 3000 BC in Cyprus. In the ancient times copper was used for making tools‚ weapons‚ ornaments and many household utensils. Copper is the third most widely used metal after aluminium (Al) and iron (Fe) because of its high durability (Doebrich et.al‚2009). In the Southern African region copper has been extracted by the early inhabitants long
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Spectrophotometric Determination of Copper in Brass Your Name Here Partners: his/her name here Chemistry 1290-xxx Date Report is Due TA: TA’s name here Purpose: The primary purpose of this experiment was …… Another purpose of this experiment was …… Learning about this type of analysis was important in an everyday context because ... Safety Information: During this lab nitric acid will be used as an oxidizing agent and (NO2) nitrogen dioxide will form. This gas is extremely toxic‚ and should
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Dominick Prince Partner: Ryan Potts Reactions of Copper Due: Monday January 14‚ 2013 Beginning of Class Block: 5 Purpose / Safety: Purpose: 1. Observe some chemical reaction of copper and its compounds. 2. Write word and formula equations to represent these reactions. Safety: 1. Wear goggles and a lab apron or coat. 2. Tie back long hair and secure loose clothing before working with an open flame. 3. Corrosive substance; avoid contact with skin‚ eyes‚ and clothing
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Organic Chemistry Experiment 1 Determination of Empirical Formula: Preparation of a Copper Sulphide. Aim The aim of the experiment was to determine the empirical formula of sulphide of copper and to make sure that an amount of copper metal reacted with elemental sulphur‚ Eq. 1. To be able to calculate the empirical formula of copper sulphide‚ the mass (grams) of copper has to be known and the mass (grams) of copper sulphide after the reaction. Copper‚ chemical formula Cu‚ is a known
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