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Percent Water in a Hydrate Lab 5 Pre-Lab. Obtain a large Pyrex or Kimax test tube and weigh it to the correct number of significant digits on an analytical balance. Don't require work unless, Dry Lab 2A Inorganic Nomenclature I. Oxidation Numbers, Experiment 7, Empirical Formula, Calculations, Homework Assignment - Microscopy and Cell Structure Lab, Experiment 9 and 10 - Lab report for Professor Driver, Care of the childrearing family (nurs420), Introduction to Environmental Sciences (ENVS 1301), Advanced Concepts in Applied Behavior Analysis (PSY7709), Philippine Politics and Governance (PPG-11/12), Introduction to Interpersonal Communications ( COMM 102), Electrical Machines and Power Electronic Drives (E E 452), Professional Application in Service Learning I (LDR-461), Advanced Anatomy & Physiology for Health Professions (NUR 4904), Principles Of Environmental Science (ENV 100), Operating Systems 2 (proctored course) (CS 3307), Comparative Programming Languages (CS 4402), Business Core Capstone: An Integrated Application (D083), Chapter 1 - Principles of Animal Behavior, Ch1 - Focus on Nursing Pharmacology 6e 1.000 g - 0.6390 g = 0.3610 g. 2. Experimentally measuring
Instructor Test Bank, BIO 115 Final Review - Organizers for Bio 115, everything you need to know, C225 Task 2- Literature Review - Education Research - Decoding Words And Multi-Syllables, ECO 201 - Chapter 5 Elasticity and Its Applications, Tina Jones Health History Care Plan Shadow Health.pdf, Summary Give Me Liberty! Show all work in the space (Show work) 4. known as the anhydrous salt. value _______________% H2O, Atomic masses: H =
and is referred to as an anhydrate. + 5 H2O (g)
one in which a fixed number of water molecules is crystallized with each formula unit. formula (or multiplication sign) indicates that the waters are there. Percentage of Water in a Hydrate Pre-Lab Quiz, Experiment 5: Percent Water in a Hydrated Salt, Applications and Investigations In Earth Science, Dennis G. Tasa, Edward J. Tarbuck, Frederick K. Lutgens, BIBC 100: Water and Weak Interactions (Lectur. GCC CHM 090 GCC, 2006 1 of 2 Names: _____ Lab Exercise: Percent Water in a Hydrate Introduction: A hydrate is a crystalline solid that traps water as part of its crystal structure. minutes to knock out any of the water of hydration. After heating, the anhydrous sample had a mass of 1.8820 grams. Mass of crucible
Match. Follow the specific instructions in the lab manual for preparing for the weighing bottles. (Nearest Whole Numbers) Moles water Moles anhydrous calcium nitrate o. 5mg. Dispose of
For example, the anhydrous compound cobalt (II) chloride is blue, while the hydrate is a distinctive magenta color. grams of hydrate in the sample Mass Percent of a hydrate in a mixture = 100 total mass of the sample Prior Knowledge: 2.8: Atoms and the Mole; 2.9: Calculations Determing the Mass, Moles and Number of Particles From its formula, what is the percentage of water in your hydrate? a. barium chloride dihydrate b. zinc sulfate heptahydrate 5. 8. 1.000 g - 0.6390 g = 0.3610 g, 2. c. What was the percent water in the hydrate? Pre-Lab E - ,)., Place specified amount of the unknown crystals into each weighing bottle. (Show work.) after second heating _______________g (#6 - #1), 8. 4. Answer the following and show all work for credit a. Answer the following and show all work for credit a. How many moles of water were lost? 79mm) x- _. " Think coefficients!). percent hydrate lab percent composition of hydrate lab introduction: ionic compounds often separate from water solution with molecules of water incorporated. comparing the mass of water released (when heated) to the original mass of the compound, expressed as a percentage. Measuring the mass. Accessibility StatementFor more information contact us atinfo@libretexts.org. Place the evaporating dish back up on the metal gauze and heat strongly for about 5 The mass of water in the hydrate is the coefficient (6) multiplied by the molar mass of \(\ce{H_2O}\). ; Find the mass of the original hydrate. Name the following compounds: a. SrCl2-6 H20 b. MgSO4-7 H20 4. Discard the solution in the appropriately marked container. H2O, into the weighed crucible and weigh the
structure. 0. How many moles of calcium nitrate are contained in the anhydrous sample? an unknown hydrate will be heated to determine the percentage of water originally present in it. percent by mass H 2 O = mass of water x 100% mass of hydrate. Thus, in this experiment it is our goal to determine the percent of water in an unknown hydrate as well as the formula of the hydrate. of hydrate used is equal to the fraction of water in the compound. Lab 09 - Percent of Water in a Hydrate Pre-Lab Questions Name: Date: Instructor: Section: Read the following laboratory experiment and answer the questions below. The purpose of this experiment is to determine how much if any water is present in the unknown crystals. Autumn-D Date: [(23 l .3 Section: 17 Purpose: To determine the percentage of water in a hydrate. the bluer the object. Trial 3 10% 10 9 = 0 (0) 2 = 0. From your experimental data, what is the percentage of water in your hydrate? Divide the mass of the water lost by the mass of hydrate and multiply by 100. When hydrates are heated, the water is released as water vapor. To the cooled anhydrous hydrate, add about 5 ml d.l. m (H 2 O) = 1 1 = 0 g The mass of the water divided by the initial mass of the hydrate will give you the mass percent of water in the hydrate. This is your experimental value. Autumn-D Date: [(23 l .3 Section: 17 Purpose: To determine the percentage of water in a hydrate. kaitlyn_emily2 PLUS. 0 / 9 x 100 = 9%, Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, Civilization and its Discontents (Sigmund Freud), The Methodology of the Social Sciences (Max Weber), Give Me Liberty! Explain your answer 3. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The percentage of water of hydration will be determined in this experiment for the unknown crystals by heating a weighed sample of the green crystals in an open container in an oven until all of the water of hydration has been driven off. Pre-Lab Assignment for Analysis of Hydrates 1. 4. examples of hydrates are: lithium perchlorate trihydrate - LiClO4
4. Substances that are physically combined can be separated by physical means. should be almost pure white. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The hydrate is a compound formed by an ionic bond combined with the water molecule (known as "water of hydration") attached to it. Accessibility StatementFor more information contact us atinfo@libretexts.org. Then heat the test tube more strongly until no more droplets of water can be seen forming on the inside of the test tube. 5XWWoU?\5DQSVK[Sjfh]Nw?UoUw\
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-4;^OE>/[AH",E_F?-jLE(SSSc5K=3BCsa==;*I-R. a. Experts are tested by Chegg as specialists in their subject area. If you look at a typical bottle of copper sulfate, it will be a bluish-green. Explain your answer 3. Choose all that are correct. This will be done through a knowledge of finding empirical formulas and percent composition. The hydrated form of cobalt (II) chloride contains six water molecules in each formula unit. Reweigh the test tube with the sample in it and record on Data Table. approximately 3 grams of barium chloride dihydrate, BaCl2 2
percentage of water in a hydrate- pre lab. Weigh the weighing bottles containing the green crystals to the nearest 0.0001 g using the same analytical balance that you used in determining the mass of the empty weighing bottles. compounds that incorporate water molecules into their fundamental solid
sheet and clearly show all calculations. Place the weighing bottles in a 50mL beakers in a 800 mL beaker, cover with a watch glass, and heat for specified time at some temperature to drive off the water of hydration. The name of the compound is cobalt (II) chloride hexahydrate and its formula is \(\ce{CoCl_2} \cdot 6 \ce{H_2O}\). Show calculation. Mass of BaCl2
for 3 minutes. Lab 09 - Percent of Water in a Hydrate Pre-Lab Questions Date: Name: - Section: Instructor: - Read the following laboratory experiment and answer the questions below. 7. Name the following compounds: a. SrCl2.6 H20 b. MgSO4-7 H20 4. experimental percentage of water in a hydrate found by comparing the mass of water released (when heated) to the original mass of the compound, expressed as a percentage; it is done in the labratory by measuring the mass of the compound before and after heating (Show work for credit.) Calculate . theoretical percentage of water. Estimate the energy (in joule) the Sun emits in one second. Mass of the anhydrous (without water) Copper(II) sulfate. Calculate the percent of the water that was in your hydrate at the beginning of the This resource is a classic chemistry laboratory to find the percent of water in the copper (II) sulfate hydrate. 3H2O; magnesium carbonate pentahydrate - MgCO3
Reason why it is Put on your CHEMICAL
What are the safety precautions in this experiment? how is the process of finidng experimental percentage pursude. What is the difference between a hydrated compound and an anhydrous one? View Wash your hands before leaving the lab. 3.6 Record this in your notebook. experimental percentage of water. directly under the dish. What is the half-life of B? equal the mass of the hydrated salt. ' l.;1! Calculate the loss in mass upon heating for each sample and attribute the mass loss to the water of hydration. 31 Fundamental Chemistry. Properties of Hydrates. What is your percent error? HYDBATG OF HANESIUM SVLFA'E mass .5 gab Mao a .100 7. one in which a fixed number of water molecules is crystallized with each formula unit, Other common hydrates have waters of crystallization ranging from, upon heating, a hydrate decomposes and produces an, found by comparing the mass of the water of crystallization to the mass of the hydrate salt, found by comparing the mass of water released(when heated) to the original mass of the compound, expressed as a percentage. Do not leave the crystals in the oven for more than specified time, or they may begin to decompose and turn brown. Then heat the sample
a 1. For the same sectional slice shape, which has the lower drag coefficient? Trial 1Trial 2 8.45%9% 8 9 = -1 (-1)9 9 = -0 (-0) 22 = 1= 0. How many moles of calcium nitrate are contained in the anhydrous sample? for 10 minutes. 2. The mass of water evaporated is obtained by subtracting the mass of the anhydrous solid from the mass of the original hydrate (\ref{3}): Ionic compounds that contain a transition metal are often highly colored. Find the mass of the water lost after heating. The remaining solid is Using the correct formula, find the percent water in copper (II) sulfate pentahydrate. Mass of BaCl2
Give the chemical formulas for the following two hydrates. 2. Calculate the value of " n ", the number of moles of water molecules present per mole of CuSO 4 and Epson Salts. 22.0%" H.029 .2 3.043 mdmm (Me $64. ' I In 4 r 1 8. Record this mass to +0.01 g.
Why is the crucible cover not set directly atop the crucible when heating? percent hydration (percent water) can be calculated from the formula of
J u J h gm I , Materials: v u .. M. Hydrate sample of magnesium sulfate PROCEDURE: am. Determine the percentage of water experimentally. we 7. Be careful when handling hot glassware and equipment. number of waters. b. While this is heating, record any observation about the hydrate on the data sheet. This is your theorectical value. rWi- POO :2 /, ' 1'4) K 5280 r; 3 V . In another experiment, the mass of a hydrate was found to be 2.7090 grams. To name hydrates, just name the ionic compound and then use the same prefixes as used to name molecular/non-acids, to indicate the number of water molecules in the hydrate. a. barium chloride dihydrate b. zinc sulfate heptahydrate 5. d. What is the ratio of moles of water to moles of anhydrous calcium nitrate? Lab 5. View It is appropriate for any college preparatory level high school chemistry class. The formula for water is set apart at the end of the formula with a dot, followed by a coefficient that represents the number of water molecules per formula unit. Then the smaller In this lab you will determine the percentage of water contained in various hydrates. The anhydride residue weighs 2.015 grams. How can you convert a hydrate to an anhydrous compound. dish. & BaCl2 after first heating _______________g, 5. Experts are tested by Chegg as specialists in their subject area. The theoretical formula is MgSO4 o 7H20 3 l t . Finding the experimental percentage of water in a hydrate is found by ___ the ___ before and after heating. << /Length 5 0 R /Filter /FlateDecode >> Flashcards. The prex before each hydrate tells how many water molecules are Define these terms: a. Hydrate b. Anhydrous solid c. Deliquescent 2. 2.09 x 100 = 20.9%. (1 Cu)(63.55 g/mol) + (1 S)(32.07 g/mol) + (4 O)(16.00 g/mol) = 159.62
Safety Always practice safe laboratory procedures. Other
x\}_A[%]6mwKqL&os@p Experiment 605: Hydrates . 3.04 e r (Hint: Have you seen this compound before? This is your theoretical value. m (1, 4 5/)anh7droos saH' Give the chemical formulas for the following two hydrates. 2. The mass of the anhydrous salt and test tube was 31.0035 grams. stream The difference between the hydrate mass and anhydrate mass is the mass of water lost. In an earlier experiment, an unknown crystalline product of an unknown formula was prepared. Record this mass to +0.01 g.
(Convert mass to moles.) r; it I Group of answer choices Crystals Bulbs Ammeter Bimetallic strips Diodes Infrared light Convective eddies, Burning of fuel in a car's motor reaches temperatures of 1,091 K. If the atmosphere is at 300 K, what is the maximum efficiency of this heat engine (to two decimal places) ? .3! How many moles of water were lost? Name the following compounds: a. SrCl2.6 H20 b. MgSO4-7 H20 4. The theoretical (actual) percent hydration (percent water) can be calculated from the formula of the hydrate . Le Chatelier's principle predicts that an addition of heat to an endothermic reaction (heat is a "reactant") will shift the reaction to the right (product side). (0.3610 g /1.000 g) (100) = 36.10%. the chemical name is calcium sulfate dihydrate. Mass of hydrated salt (g), 21 g 19 g = Trial 1 2 g 25 g 20 g = Trial 2 4 g 22 g 18 g = Trial 3 3 g, 21 g 19 g = Trial 1 2 g 24 g 20 g = Trial 2 4 g 21 g 18 g = Trial 3 3 g, 2 g 2 g = Trial 1 0 g 4 g 4 g = Trial 2 0 g 3 g 3 g = Trial 3 0 g, Percent by mass of volatile water in hydrated salt (%), 0 g / 2 g x 100 = Trial 1 Trial 2 Trial 3 Section 1: Purpose and Summary . combined with the salt in a denite ratio. (Show work for credit.) 7. 2. 5H2O; and copper(II) sulfate pentahydrate - CuSO4
The mass of the anhydrous salt and test tube was 31.0035 grams. When it has lost its water molecules, it is said to be anhydrous. Determine the number of moles of water, x, per mole of anhydrous salt and write the chemical formula of the hydrate sample. Relative standard deviation of %H 2 O in hydrated salt (%RSD) Dividing this number by the original mass will give the percent water in the hydrate. 3. The water of hydration of calcium chloride dihydrate is two water molecules per every one formula unit of calcium chloride. Place the
4. Procedure 1. Record this mass to +0.01 g.
Standard deviation of %H 2 O Obtain an unknown sample of a hydrate. Mass of the water lost during heating. Heat the
mass of woc:mass of HS, experimental percentage of water can be found by. 4. 950+ (0.3610 g /1.000 g)(100) = 36.10%. (Show work for credit.) To the percent water a hydrate, the mass of a,hydrate is obtained. Full Document. %water of hydration = (mass lost during heating)/(mass of original sample) X 100%. the faster the object. 12. CuSO4 5 H2O(s) + HEAT ----> CuSO4 (s)
The mass of of anhydrous CaSo4 salt is 1.426g. 4. Understand the law of definite composition and law of conservation of mass Prior to lab read the sections of our textbook that discuss the topics: moles, molar mass, hydrates, percent composition, and the law of definite composition. From its formula, what is the percentage of water in your hydrate? What are the safety precautions in this experiment? 1.01; O = 16.00; Cl = 35.45; Ba = 137.33. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. the mass of the water lost by the mass of hydrate and multiply by 100. On your lab report form draw a diagram of your setup and label all of thepequipment. Explain your answer 3. % H20 ,= (mass H20/ mass of hydrate) x 100 , of water lost. ~ ~. Legal. (aq) 9. 10. Lab 09 - Percent of Water in a Hydrate Pre-Lab Questions Name: Date: Instructor: Section: Read the following laboratory experiment and answer the questions below. A hydrate that has lost its water molecules is said to be 3. 1. 1. Hydrates are ionic compounds that contain water molecules as part of their crystal structure. Experimental value theoretical value Theoretical value x 100 6. SD= Sq rt (1 / 3 1) The molar mass of the hydrate is the molar mass of the \(\ce{CoCl_2}\) plus the mass of water. 0. to learn to handle laboratory apparatus without. the dimmer the object. Many ionic compounds naturally contain water as part of the crystal lattice structure. the formula mass. Explain why the experimentally determined empirical formula may not match the actual formula of Epsom salt (propose at least 2 ideas). (s) b. put 2g axle at /" 7 WL N 7: ' Formula mass = 159.62 g/mol + (5 H20)( 18.02 g H20/mol)
= 249.72 g/mol
Then the The water in the hydrate
View Lab Report - Percent Water in Hydrate from MATH 576 at Rift Valley Institute Of Science & Technology, Nakuru.. Why the difference? in the laboratory by measuring the mass of the compound before and after heating. (About 10 minutes) 7. the mass of water in the hydrate can be determined. 12. The water molecules interact with some of the \(d\) electrons in the copper ion and produce the color. Experts are tested by Chegg as specialists in their subject area. water of crystallization. What was the mass of water lost? If some table salt, NaCl, gets wet, it is now a hydrate! After heating, the anhydrous sample had a mass of 1.8820 grams. Add them together to get the mass of the hydrate. A 4.68 g of a hydrate is heated to remove its water content, and the residue solid weighs 3.54 g. Determine the percent water in the hydrate. Name: Dae| Instructor: Time & Day of lecture: -7. After the final weighing, place the covers on the weighing bottles, and store them with their contents in your drawer. SD= 0. From your experimental data, what is the percentage of water in your hydrate? upon heating, a hydrate decomposes and produces an. The hotter an object the brighter the object. . Create three research questions that would be appropriate for a historical analysis essay, keeping in mind the characteristics of a critical r, Tina jones comprehensive questions to ask, Leadership class , week 3 executive summary, I am doing my essay on the Ted Talk titaled How One Photo Captured a Humanitie Crisis https, School-Plan - School Plan of San Juan Integrated School, SEC-502-RS-Dispositions Self-Assessment Survey T3 (1), Techniques DE Separation ET Analyse EN Biochimi 1, Molecular weight of water is 18. 11. Mass of empty
What do the following symbols represent? Unformatted text preview: Percent Water in a Hydrate ' r Adaptgd'om a lab by Sally Mitchell Namei 1'3 LEV. Write the equation used to calculate the percent water by mass in the hydrate: The following experimental data were obtained for an unknown hydrate. What is a hydrate? Full Document. A hydrate can usually be converted to the anhydrous compound by heating. Allow the crucible to cool, then weigh
Learn. Determine the percentage of water experimentally. (Nearest Whole Numbers) Moles water : Moles anhydrous calcium nitrate e. What is the formula for this compound? a defined number of water molecules are associated with each formula unit
What is the difference between a hydrated compound and an anhydrous one? What is the percent water in lithium nitrate trihydrate? Terms in this set (9) hydrate salt. Spring 2017 - CHE 117 - Lab 09b - Determining Avogadro's Number, Spring 2017 - CHE 117 - Lab 01b - Percent Water in a Hydrate (1).doc, Spring 2022 - CHE 117 - Lab 10 - PreLab Lecture (1).pptx, Spring 2017 - CHE 117 - Lab 08 - Alkalinity and the Carbonate System(1), Spring 2017 - CHE 117 - Lab 05 - The Determination of an Equilibrium Constant, Unformatted text preview: Percent Water in a Hydrate 1. If some table salt, NaCl, gets wet, it is now a hydrate! _____ 2a) A student records the following data in the laboratory when determining the percentage water in an unknown hydrate. So for every formula unit, there would be some amount of water molecule combined with the ionic compound and would act as a single compound. What is a hydrate? & BaCl2 after second heating _______________g, 7. Name: Dae| Instructor: Time & Day of lecture: -7. Ionic compounds are those that are binary compounds containing a metal and a Answer1) Ahydrateis a solid ionic compound that contains specific number of water molecules in its crystal structure. The gravimetric analysis of this experiment is meant to be quantitative; therefore, all precautions should be made to minimize errors in the analysis. 4 0 obj in y . 22.069 Molecular weight of iron (II) sulfate heptahydrate is 278. (Show work for credit.) Record this mass on your Data Table 9. Divide the
Created by. DATA
5 H2O. Why is it important to heat the hydrate thoroughly? Test. The greater the temperature difference between two temperature reservoirs, the more ________ can be done. dish + anhydrous salt. What do the following symbols represent? This water can be driven off by heat to form the anhydrous (dehydrated) ionic compound, magnesium sulfate. Instructor: Section: Unknown Hydrate Number Mass of test tube and hydrate, grams Mass of empty test tube, grams Mass of unknown hydrate, grams Mass of test tube and anhydrous hydrate (after heating), Mass of empty test tube, grams Mass of anhydrous hydrate, grams Mass of water lost, grams Did the solution feel hot or cold? Ill/v: _ r \ l 5. 0 x 100% / 1 = 20% crucible for another 5 minutes, cool, then weigh. Transfer
2. 3. The number of water molecules in a typical hydrate is characteristic of . Cross), Brunner and Suddarth's Textbook of Medical-Surgical Nursing (Janice L. Hinkle; Kerry H. Cheever), Campbell Biology (Jane B. Reece; Lisa A. Urry; Michael L. Cain; Steven A. Wasserman; Peter V. Minorsky), Chemistry: The Central Science (Theodore E. Brown; H. Eugene H LeMay; Bruce E. Bursten; Catherine Murphy; Patrick Woodward), Biological Science (Freeman Scott; Quillin Kim; Allison Lizabeth), Psychology (David G. Myers; C. Nathan DeWall), Principles of Environmental Science (William P. Cunningham; Mary Ann Cunningham), Educational Research: Competencies for Analysis and Applications (Gay L. R.; Mills Geoffrey E.; Airasian Peter W.), PRELAB 5 PERCENT WATER IN A HYDRATED SALT QUESTIONS 3,5,6, Dry Lab 2A - These are for Lab Professor Graeme or Constantino. Step 1: List the known quantities and plan the problem. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. The hydrate listed above is called copper (II) sulfate pentahydrate. What is the heat engineefficiency(in percent)of this power plant? 1. A hydrate that has lost its water molecules is said to be 3. Check your calculations; the mass of the anhydrous salt+ mass of the water should What is the formula for this compound? Find the mass of the original hydrate. What was the mass of water lost? Flashcards. Allow to cool for 3 minutes and then immediately obtain the mass of the evaporating Note that the dot in the
experiment percent water in hydrated salt objectives to determine the percent mass of water in hydrated salt. (Show work for credit)
Experiment 7 Empirical Formulas Lab Notebook and Pre-Laboratory Questions-3; EXP 9 and 10 Volumetric and Vinegar Analysis Lab Report.docx; Experiment 8 Limiting Reactant; Preview text. Stir the mixture using a stirring rod. (Show work for credit.) w. r Adaptgdom a lab by Sally Mitchell Namei 13 LEV. Interestingly, it is common for the hydrated form of a compound to be of a different color than the anhydrous form, which has no water in its structure. Heat the empty crucible by placing it on the wire gauze and heating it with the burner To find the percent water in a hydrate in which we know the formula, find the molecular mass of the anhydrous salt and the mass of the water molecules. Calculate percent error. _______________% H2O, 10. Ex: CuSO45 H2O(s) is a hydrate that contains one copper (II) formula unit with 5 molecules of water attached. Lab 2: Determine the Percentage of Water in a Hydrate: The goal of this experiment is to learn how to properly calculate the ratio of salt to water, in a hydrated salt, and to calculate the percentage of water (by mass) within a hydrated salt. found by comparing the mass of the water of crystallization to the mass of the hydrate salt. Give the chemical formulas for the following two hydrates. Answer1) A hydrate is a solid ionic compound that contains specific number of water molecules in its crystal structure. Ignite a Bunsen burner and, using a test tube holder, heat your sample over a low flame for 5 minutes. For a D-MOSFET biased at VGS=0V_{G S}=0VGS=0, is the drain current equal to zero, IGSSI_{G S S}IGSS, or ID5sI_{D 5 s}ID5s ? (Convert mass to moles.) Theoretical
The half-life of A is 0.50 hours. + 5 H2O (g)
~; ,., a A (Show work.) We reviewed their content and use your feedback to keep the quality high. Predict the percent of water in a hydrate mathematically. 7 x 18 / 278 x 100 = 45%. Now nd the mass of the evaporating dish + hydrate and record in the data table. with two water molecules present for every formula unit of CaSO4. It is useful to know the percent of water contained within a hydrate. hydrate is heatedzuntil no more water vapor is given off and the mass remains constant. Give the chemical formulas for the following two. . the anhydrate are calculated and the # moles of the water are calculated. b. This lab explores how to remove water from an ionic compound when it . Lab 09 - Percent of Water in a Hydrate Pre-Lab Questions Date: Name: - Section: Instructor: - Read the following laboratory experiment and answer the questions below. Use exact numbers; do not. ; 0 u {A ____;LLL~- 3V (0 1-0 " zAms *b4) q 1(3f31- 5'1. 29.463 g 6. Accepted) 1.100 Accepted Calculate the % error of the experiment in #5. H g 955 M . to a rd) nu ,y. .1 .541. Calculate the percentage of water in this hydrate. Dividing the mass of the water lost by the original mass
The mass of a fost tube and hydrate was 35.2755 grams. Using a spatula, transfer approximately 2 grams of your unknown hydrate sample into the test tube. (Show work for credit.) 8. It is generally possible to remove the water of hydration by heating the hydrate. Percent Water in a Hydrate Lab 5 Pre-Lab. 5. 1. Lab Report F arm Note: You are to show all Work in youn calculations, . A hydrate that has lost its water molecules is said to be 3. (Show work.) .. Vii"! Why is it important to heat the hydrate thoroughly? CuSO4 5 H2O(s) + HEAT ---> CuSO4 (s)
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