5 Why is it important to measure the masses of the NaCl and KNO3 samples in Part B? Part B: Solubility and Temperature Review the proper technique for measuring and transferring solids and liquids in Topic 1.3, page 13. Label four test tubes 1 through 4. 2 To each test tube, add the appropriate mass of sample as indicated below: Test tube 1: 0.5 g NaCl Test tube 2: 0.5 g KNO3 Test tube 3: 1.5 g NaCl Test tube 4: 1.5 g KNO3 3 Use a graduated cylinder to measure and add 3.0 mL of distilled water to each test tube. 4 Swirl each test tube vigorously for about 1 minute. Record the ambient temperature and your observations of each mixture under the "Room Temperature" column on the data sheet, page 298. 5 Heat any test tube that still contains solids in a boiling-water bath for about 5 minutes, swirling each tube occasionally. At the end of the heating period, record the temperature of the boiling-water bath and your observations about the appearance of each mixture under the "Boiling Water" column on the data sheet. 6 Remove the test tubes from the boiling-water bath and allow them to cool for about 15 minutes. At the end of the cooling period, record your observations about the appearance of each mixture under the "Hot → Cold"> column on the data sheet. 7 Place any heated test tubes in an ice-water bath for a few minutes, and then record your observations about the appearance of each mixture under the "Hot→Cold" column on the data sheet. 8 Dispose of the test tube contents as directed by your instructor.
5 Why is it important to measure the masses of the NaCl and KNO3 samples in Part B? Part B: Solubility and Temperature Review the proper technique for measuring and transferring solids and liquids in Topic 1.3, page 13. Label four test tubes 1 through 4. 2 To each test tube, add the appropriate mass of sample as indicated below: Test tube 1: 0.5 g NaCl Test tube 2: 0.5 g KNO3 Test tube 3: 1.5 g NaCl Test tube 4: 1.5 g KNO3 3 Use a graduated cylinder to measure and add 3.0 mL of distilled water to each test tube. 4 Swirl each test tube vigorously for about 1 minute. Record the ambient temperature and your observations of each mixture under the "Room Temperature" column on the data sheet, page 298. 5 Heat any test tube that still contains solids in a boiling-water bath for about 5 minutes, swirling each tube occasionally. At the end of the heating period, record the temperature of the boiling-water bath and your observations about the appearance of each mixture under the "Boiling Water" column on the data sheet. 6 Remove the test tubes from the boiling-water bath and allow them to cool for about 15 minutes. At the end of the cooling period, record your observations about the appearance of each mixture under the "Hot → Cold"> column on the data sheet. 7 Place any heated test tubes in an ice-water bath for a few minutes, and then record your observations about the appearance of each mixture under the "Hot→Cold" column on the data sheet. 8 Dispose of the test tube contents as directed by your instructor.
Chapter9: Parenteral Medication Labels And Dosage Calculation
Section: Chapter Questions
Problem 2.3P
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Transcribed Image Text:5 Why is it important to measure the masses of the NaCl and KNO3 samples in Part B?
Transcribed Image Text:Part B: Solubility and Temperature
Review the proper technique for measuring and transferring solids and liquids in Topic 1.3, page 13.
Label four test tubes 1 through 4.
2 To each test tube, add the appropriate mass of sample as indicated below:
Test tube 1: 0.5 g NaCl
Test tube 2: 0.5 g KNO3
Test tube 3: 1.5 g NaCl
Test tube 4: 1.5 g KNO3
3 Use a graduated cylinder to measure and add 3.0 mL of distilled water to each test tube.
4 Swirl each test tube vigorously for about 1 minute. Record the ambient temperature and your observations
of each mixture under the "Room Temperature" column on the data sheet, page 298.
5 Heat any test tube that still contains solids in a boiling-water bath for about 5 minutes, swirling each tube
occasionally. At the end of the heating period, record the temperature of the boiling-water bath and your
observations about the appearance of each mixture under the "Boiling Water" column on the data sheet.
6 Remove the test tubes from the boiling-water bath and allow them to cool for about 15 minutes. At the end
of the cooling period, record your observations about the appearance of each mixture under the "Hot → Cold">
column on the data sheet.
7 Place any heated test tubes in an ice-water bath for a few minutes, and then record your observations about
the appearance of each mixture under the "Hot→Cold" column on the data sheet.
8 Dispose of the test tube contents as directed by your instructor.
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