Reporter: Kyla Franchesca V. Venegas Instructor: Prof. Susan Torres Section: 1-12 Date Performed: September 2‚ 2014 Group No.: 7 Date Submitted: October 3‚ 2014 Experiment 2 The Particulate Nature of Matter INTRODUCTION Matter is defined as that which has mass and occupies space. All matter is particulate in nature
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Joshua McMahon IB Chemistry Matt Chase 3A 11/5/14 Finding the Molar Enthalpy Change of sodium bicarbonate by using Hess Law Research Question By using Hess’ Law‚ can the Molar Enthalpy Change of sodium bicarbonate be calculated? Hypothesis If we are attempting to determine the enthalpy change of the thermal decomposition of Sodium Bicarbonate‚ then Hess’s Law will be will be the most effective. Introduction Sodium bicarbonate‚ more commonly known as baking soda‚ has many uses in todays
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FINDING ΔH FOR THE COMBUSTION OF MAGNESIUM MATERIALS: 12 oz. Styrofoam cup with lid‚ thermometer‚ 50-mL and 100-mL graduated cylinders‚ weighing boat‚ 1.0 M HCl‚ 1.0 M NaOH‚ magnesium ribbon‚ magnesium oxide‚ copper wire. PURPOSE: The purpose of this experiment is to determine the enthalpy change for the combustion of magnesium: Mg (s) + ½ O2 (g) → MgO (s) ΔHrxn = ΔH combustion by determining the ΔH values for reactions which can be combined together according to Hess’ Law‚ yielding the ΔH
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because raw material used in the making of Portland cement can be easily found and is available all over the world. Apart from that OPC is the cheapest among all other cementitious material available. Malaysia does not have much problem of existing sulfates in soil or groundwater‚ therefore usage of OPC is optimum to eliminate unnecessary cost spending ORDINARY PORTLAND CEMENT PROPERTIES The properties of concrete depend on the quantities and qualities of its components. Cement is the most active
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of Mass and Volume Part A: The Formula of Hydrated Copper (II) Sulfate Aim: The objective of this experiment is to find out the accurate mass of a solid and to calculate the moles of an unknown. Materials: The materials used in this experiment are Hydrated Copper (II) Sulfate‚ weighing bottle‚ analytical balance‚ laboratory balance‚ casserole‚ spatula‚ and hotplate. Methods: First‚ approximate 1.0g of hydrated copper (II) sulfate was transferred into a weighing bottle and the lid was
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effect of dilution on the solution’s absorbance Materials: Copper Sulfate Coloured solution – Potassium Manganate (KMnO4) Hotplate Method: Part A: The Formula of Hydrated Copper (II) Sulfate Firstly‚ about 1.0 g of hydrated copper (II) sulfate was put in the weighing bottle and the colour was noted. The mass of capped weighing bottle and hydrated copper (II) sulfate in it were measured and recorded. Then‚ the copper (II) sulfate was transferred into a casserole and the mass of the empty weighing
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the accepted (published) value for alum (92.5°C). The second test detennines the water of hydration present in the alum crystals. The third test is a chemical test to detennine the percent sulfate in your sample of alum. OBJECTIVES In this experiment‚ you will • • • • Detennine the melting temperature of a sample of alum. Detennine the water of hydration of a sample of alum. Detennine the percent sulfate of a sample of alum. Verify the chemical fonnula of a sample of alum. MATERIALS Part I
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covalently bonded to the host molecule or ion. Water is taken up in definite proportion in relation to the mass of the crystalline structure. This water that is trapped inside the hydrated solid structure is called water of crystallization or water of hydration. A salt with associated water of crystallization is known as a hydrate. The formula of a hydrated salt is written as the number of moles of water present in one mole of crystalline structure. Deliquescent materials are substances that absorb water
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PERIOD:_________ Prelab 1. A 6.00g sample of calcium sulfate hydrate (CaSO4.x H2O) is heated until all the water is driven off. The anhydrous compound has a mass of 4.77 g. Calculate the value of x in the formula. 2. For the data in problem number 1 above‚ what is the mass percent water in the hydrate? 3. Calculate the number of grams of water that could be obtained by heating 2.00 g of sodium sulfate decahydrate (Na2SO4.10 H2O). Hydrates Analysis
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AP Chemistry Analysis of Alum * Purpose: * In this lab we performed several tests to determine if our crystals were actually aluminum potassium sulfate. * Procedures: * Materials: * Chemicals: * Aluminum potassium sulfate‚ 2.5 g * Equipment – Part 1: * 150 mL beaker * Bunsen burner * 2 capillary tubes * Mortar and pestle * Notched stopper to hold thermometer *
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