much heat is this in calories? Chapter 4 Identify X: Give the formula for the compound formed from the most common ions of Ca and O Chapter 5 Name the following compounds: P4O10 CoCl3 Li3P HClO3 RbOH Calculate the formula mass of copper(II) sulfate pentahydrate (CuSO4·5H2O) Chapter 6 Calculate the number of moles and number of molecules in 65.78 g of H2O. How many H atoms and how many O atoms are contained in this sample? NutraSweet is 57.14% C by mass‚ 6.16% H by mass‚ 9.52% N by
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reactions work and what products they may form. Materials & Procedure Materials: * Wood Splints - Copper Sulfate * Sodium Sulfate - Copper Wire * Barium Chloride - 6% Hydrogen Peroxide * Mossy Zinc - Copper Sulfate Pentahydrate * Hydrochloric Acid - Iron Filings * Manganese Dioxide Procedure: Reaction A Place a scoop of copper (II) sulfate pentahydrate crystals in a clean‚ dry test tube. Use a test tube holder to position the test tube over a burner
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…………………………………………………………………………. 15 Classification of Matter Experiment 4 ………………………………………………………………………….17 Chemical Nomenclature: The Language of Chemistry Experiment 5 ………………………………………………………………………….22 Water of Hydration Experiment 6 ………………………………………………………………………….25 Gases Experiment 7 ………………………………………………………………………….27 Oxygen Experiment 8 ………………………………………………………………………….29 Heat and Volume Effects Experiment 9 …………………………………………………………………………
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LAB 12 PERCENTAGE COMPOSITION OF HYDRATES Pre-Lab Questions: See page(s) 1 for calculations Purpose: The purpose of this lab was to learn how to determine the percent of water in a hydrate. Materials: Evaporating dish Ring stand Wire gauze Burner Crucible tongs Triple beam balance Copper(II) sulfate penta-hydrate Spatula Glass stirring rod Distilled water Procedures: See page(s) 1 and 2‚ for procedure steps 1-11 Observations and Data: 1. Mass of evaporating
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hydrate of copper (II) sulfate hydrate. Hypothesis: I hypothesize that when the solution is heated the hydrate will convert to an anhydrous ionic compound. Then the percentage composition will be determined by weighing the mass of the white crystals. Materials: 400ml beaker‚ hot plate‚ tongs‚ scoopula‚ electronic balance‚ glass rod‚ hot pad‚ and 4g of hydrated copper (II) sulfate Procedure: 1. Measure the mass of the beaker and stirring rod. 2. Add 4g hydrated copper (II) sulfate to the
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I. Objective The first objective of the measurement of thermal conductivity & one-dimensional heat conduction experiment was to identify three different metal specimens by comparing their experimentally determined thermal conductivities to known thermal conductivity values of existing metals. The second objective of the experiment was to establish a connection between the thermal conductivities & temperatures of the metal specimens. Thirdly‚ the contact resistance of the interfaces between
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used were copper sulfate (blue crystals)‚ sodium chloride (salt)‚ and iron. Copper sulfate is a chemical compound which is produced commercially by reacting various copper (II) compounds with sulfuric acid [1]. It generally appears as a bright blue or green crystal [1]. Its chemical formula is CuSo4. Iron is silver-white magnetic metallic and readily rusts in moist air [3]. Its chemical formula is Fe. The chemical reaction was demonstrated by the iron reacting to the copper sulfate.
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number of moles of anhydrous copper sulfate‚ percent comp of water in the hydrated copper sulfate‚ the mole ratio of moles of water and moles of anhydrous copper sulfate. Once this is all done‚ we found our percent error and compared it to the exact value. In the lab‚ we used the following tools: lab apron‚ lab goggles‚ clay triangle‚ bunsen burner‚ ring stand‚ flint striker‚ electronic weight‚ crucible‚ crucible tongs‚ scoopula‚ gas line‚ beaker‚ copper (II) sulfate‚ and paper towels. To begin
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Enthalpy changes can be calculated using average bond enthalpy data. i) The enthalpy change to convert methane into gaseous atoms is shown below. [pic] Calculate the average bond enthalpy of a C—H bond in methane. [1] ii) Use the data in the table below and your answer to (a)(i) to calculate the enthalpy change for [pic] [3] [pic] b) The standard enthalpy of formation of 1‚2-dibromoethane‚ CH2BrCH2Br‚ is – 37.8 kJmol-1. Suggest the main reason for
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extraction of Albumin from egg and the determination of protein concentration via the Warburg-Christian method and Bradford Assay method. In the first part‚ egg white underwent the addition of a weak acid‚ disruption of cell membrane‚ addition of ammonium sulfate and centrifugation. The product obtained was not weighed because of its relatively small amount and was considered a failure by the experimenters. In the second part of the experiment‚ the protein concentration of the product acquired from the first
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