Identification of a Hydrate Based on Percent Water Varun Wadhwa 11/19/12 Introduction The identity of an unknown hydrate was determined by massing the hydrate before and after heating and calculating the percentage of water. Procedure First‚ we cleaned‚ dried and heated an evaporating dish for five minutes on an iron ring with the Bunsen burner and massed it. Then‚ we added 2 grams of an unknown hydrate and calculated the mass of that. Next‚ we used gradually increasing heat for
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Percent Water in a Hydrate PURPOSE To determine the percent water in a hydrate sample. INTRODUCTION Many substances contain water molecules as a part of their crystal structure. We call such solids hydrates‚ and we call the bound water the water of hydration. A hydrate has a definite number of water molecules bound to each anhydrous salt unit. The formula of the hydrate copper(II) sulfate pentahydrate is CuSO4 · 5 H2O The dot indicates that the molecules of water are attached to the ions in
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Determining the Number of Water Molecules in a Hydrate Results Mass of empty beaker 55.11 g Mass of beaker with hydrated copper (II) sulfate 58.13 g Mass of hydrated copper (II) sulfate 3.02 g Mass of beaker with dehydrated copper (II) sulfate (last weighing) 57.22 g Mass of dehydrated copper (II) sulfate 2.18 g Mass of dehydrated copper (II) sulfate (2nd weighing) 2.11 g Questions 1. Calculate the value of “n”. Show your work. Include an example of ALL calculations involving
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8 PERCENTAGE OF WATER IN A HYDRATE Objectives 1. To determine the percentage of water in barium chloride dihydrate. 2. To determine the percentage of water in an unknown hydrate salt. 3. To calculate the water of crystallization for the unknown hydrate salt. Discussion A hydrate salt is composed of anions (negative ions) and cations (positive ions) which are surrounded by and weakly bonded water molecules. Each hydrate salt has a fixed number of water molecules associated
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a market share of 7.5%‚ which is acceptable to the competition regulators. The transaction will result in a capital gains tax exposure for City Farmers shareholders‚ who may be eligible for a rollover relief. 2. Introduction Acquisition
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“Fountain of Youth” During his twilight years‚ American author Mark Twain noted that "life would be infinitely happier if we could only be born at the age of 80 and gradually approach 18." Twain’s quip was only one of many complaints about aging that have been recorded for as long as humans have dreaded the downside of a long life. The ancient Greek poet Homer called old age "loathsome‚" and William Shakespeare termed it "hideous winter." So it’s not hard to understand why there have always been
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HEALTHY SPRING WATER COMPANY PROBLEM 1a DEFINING THE PRICE-VOLUME TRADEOFF FOR A 20% PRICE INCREASE The Health Spring Water Company sells bottled water for offices and homes. The price of the water is $20 per 10 gallon bottle and the company currently sells 2‚000 bottles per day. Following is a summary of the company’s income and costs on a daily basis. Sales Revenue $40‚000 Incremental Variable Costs $16‚000 Nonincremental Fixed Costs $20‚000 Note: You can assume that
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Project Blue Mountain Spring Water‚ Inc. Three Year Marketing Plan III. Blue Mountain Spring Water I. Opportunities ( external factors) A. The opportunity to ultilize the latest technology for distribution and marketing. B. Expand outside of regional markets to other select markets but avoid mass marketing C. Blue Mountain has no debt therefore it can expand its R&D (research and development) to increase public knowledge about health benefits of purified water versus tap. D. Ther
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What is the Identity of this Hydrate? Date Performed: May 30‚ 12 Date Submitted: June 6‚ 2012 Name: 2968 Instructor: Reid A hydrate was given to our group and the identity of the hydrate was unknown. The lab workers were told to determine the identity of the unknown hydrate. The identity of the hydrate could be determined by calculating the hydrate’s percent of water. So the lab workers set out to determine the water percent of the unknown hydrate. The percent of any compound or element
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Hydrates Analysis NAME:_____________________________________ 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
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