LARN 130 C33D2

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LARN 130 C33D2 Start the following in class: 1.a. The required focus topic, J130A, for today is: You have a job as a laboratory technician.  Describe what must be done to prepare 175.0 mL of a 0.250 M CuSO4 aqueous solution. You will need to use the copper (II ) sulfate pentahydrate, CuSO4•5H2O(s), found in the stockroom to prepare the solution.  Describe what size volumetric flask that you would use and explain the reason for your selection. Show the calculation of the number of moles of CuSO4•5H2O(s) that must be measured into the volumetric flask that you selected to use.  Label all units and show cancellation of units for this calculation. Show the calculation of the number of grams of CuSO4•5H2O(s) that must be measured into the volumetric flask that you selected to use.  Label all units and show cancellation of units for this calculation. Describe the steps needed to prepare the 0.250 M  CuSO4(aq) solution starting with the quantitative transfer of the calculated...
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LARN 126 C32D2

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LARN 126 C32D2 Start the following in class: Study for the summative assessment on chapter 15 that is to be given on your next school day that our class meets.  Today is day 126.  Study for your test which is scheduled for school day 127!  If your class does not meet on day 127, today's home learning activities are listed under day 127 and on day 127 your home learning activities are those listed below. 1.  Go to http://www.phschool.com/webcodes10/index.cfm?wcprefix=cda&wcsuffix=1150&area=view and take an online formative assessment for chapter 15, Water and Aqueous Systems. Then click on the Score My Test button and study anything that you do not yet understand. 2.a.  Review and study your notes, and your journal reflections. Study your learning log, your Cornell Notes, and anything that was misunderstood on the Chapter 15 Study Guides, Chapter 15 Section Reviews, Chapter 15 Water and Aqueous Solutions [Formative] Test A, and other work sheets which you now have checked using green ink. Look up anything that...
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LARN 125 C32D1

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LARN 125 C32D1 Start the following in class: 1.a. The first required focus topic, J125A, for today is What are the meanings of the terms coarse mixture, suspension, colloid, and solution ? 1.b. The second required focus topic, J125B for today is Copy the following chart and fill in examples for the different types of mixtures.  Coarse mixture Suspension Colloid Solution Scatters Light from a Beam of Light [Exhibits the Tyndall Effect]? [Yes or No] Typical Appearance of the Mixture Typical Size Range of Suspended or Dissolved Particles Generally Separable by Letting it Settle for a Time (Sedimentation)? [Yes or No] Appearance [Variegated, Non-Uniform, Cloudy, Clear?] Degree of Uniformity Descriptor [Heterogeneous orHomogeneous?] Approximate Sizes of Dispersed Particles               > ____nm   ____nm - ____nm           <  ____nm Separable by Ordinary Filters?  [Yes or No] Exhibits Brownian Motion? [Yes or No] Example #1: Example #2: 2.  Do all the pages in the chapter 15 Water and Aqueous Systems [Formative] Test as a formative assessment to find out some of the things that you do and do not know,...
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