Assignment 20 A 1- Which of the following oxidation numbers in the species given is incorrect? a) SO32−; S +4‚ O −2 b) ClO3−; Cl +5‚ O −2 c) H2C2O4; H 1+‚ C 3+‚ O 2− d) H2O2; H +1‚ O −1 e) Ca(ClO)2; Ca +2‚ Cl +2‚ O −2 f) Zn(NH3)6Cl2; Zn 2+‚ N 3−‚ H 1+‚ Cl 1− (Cl is +1 in this compound. Ca: 1 × (+2) = +2. O: 2 × (−2) = −4. Charge on the compound = 0; therefore‚ (+2) + (−4) + 2 × Cl = 0. The charge on Cl is 1+.) 2- A voltaic cell is constructed. One electrode compartment consists of a zinc strip placed
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Hydrated Crystalline Compound Katie Sanders Science Block 3 February 29‚ 2012 Title: Analysis of a Hydrated Crystalline Compound Purpose: The purpose of our experiment was to determine the amount of water in copper sulfate pentahydrate expressed as a percent. Hypothesis: I think that bluestone crystals are 20% water‚ because it’s called pentahydrate (penta means five) and 1/5 of 100 (since it’s expressed as a percent) is 20‚ so I think bluestone
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Using a Compound Light Microscope Purpose: The purpose of this lab is to 1. Learn the parts of a compound light microscope. 2. The functions of those parts. 3. Proper use and care of the microscope. 4. Learn the technique of preparing wet-mount slides. Materials: * Compound light microscope * Soft cloth * Microscope slide * Cover slip * Dropper * Scissors * Newspaper Procedures: Part A. Care of the Compound Light Microscope. Step 1: Always carry
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Naming Chemical Compounds PART A Name the following 1 S Sulfur 2 Sb Antimony 3 N2 Dinitrogen 4 PO43- Phosphate 5 Au Gold 6 Rb Rubidium 7 LiCl Lithium Cloride 8 AlBr3 Aluminum (III) Bromide 9 KMnO4 Potassium Manganate (VII) 10 Cu(OH)2 Copper (II) Hydroxide 11 FeSO4 Iron (II) Sulfate 12 NH4Cl Ammonium Chloride 13 ZnCO3 Zinc Carbonate 14 SnF2 Tin (II)Fluoride 15 MgSO4 Magnesium Sulfate 16 MnO2 Manganese (IV) Oxide 17 Ca3(PO4)2 Tricalcium Phosphate 18 NaOH Sodium Hydroxide
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I. Abstract The common organic compounds provide us with nutrients are sugars and starches‚ carbohydrates‚ proteins‚ and lipids. In this lab‚ qualitative tests are performed to identify the presence of organic compounds in food using indicators‚ chemical substances that react in a certain way when a particular substance is present. We put one indicator into the each test tube containing different solutions at a time to see what organic compound is present. The color change in the indicator tells
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The Separation and Purification of Organic Compounds Sunshine Marie Introduction Each year‚ many thousands of new or unknown organic compounds are prepared or extracted from natural sources such as plants‚ fungi and animals. In order to identify an unknown organic compound or the components of a mixture of organic compounds‚ it is necessary firstly to separate and purify the compounds. At any given temperature‚ a certain number of molecules of a substance in the liquid state have sufficient
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In the book The Compound by S.A. Bodeen‚ there are multiple themes being portrayed by the book. One of the main themes in the book is even if you think you may know someone‚ you may not. Throughout the book‚ many parts of the book show this‚ and talk about trust. Many elements of the book also play off of how well people know each other. The family all trust the father about why they are going into the compound‚ that there’s enough food and supplies‚ everyone is truthful‚ fine in their well being
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EFFECTS OF VOLATILE ORGANIC COMPOUNDS (10244818) Volatile organic compounds (VOCs) are organic chemical compounds that have high enough vapor pressures under normal conditions to significantly vaporize and enter the atmosphere. According to EPA ’s Terms of the Environment‚ a volatile organic compound is "any organic compound that participates in atmospheric photochemical reactions except those designated by EPA as having negligible photochemical reactivity." VOC can also stand for the term “volatile
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The Headmaster and his Assistants‚ Members of Stuff‚ Outgoing Prefects‚ Seniors‚ Fellow Student. I deem it very distinguished to stand before you at this instant to present my manifesto as an incoming school compound overseer for this grand institution of the ours. Human beings were created in God’s image and are all alike. However‚ different people from different places live differently‚ think differently and carry out different activities . Most of these are mainly based on the environment from
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The Physical Properties of Eleven Chemical Compounds Problem: Discover whether various chemical compounds are molecular or ionic and if they are acidic or basic. Hypothesis: If the compound is ionic‚ then it will be soluble because the energy given off water molecules compensates for the energy needed to break ionic bonds‚ also‚ if the compound is Ionic‚ it will be an electrolyte‚ because they mostly break up into ions when in water. If the compound is molecular‚ then it will be soluble‚ it cannot
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