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2 3 4 6 7 8 100 QUESTION 4 How much sample should be loaded into the capillary tube for a Melting Range Determination? O Enough sample so that the solid is clearly visible under the magnifying lens, but not enough of a sample height to extend out of the heated range of the DigiMelt. O The tube should be filled all the way up. Only a sinige grain of solid can be added. This is often difficult to see under the magnifying lens. O The tube should be filled halfway up.

2 3 4 6 7 8 100 QUESTION 4 How much sample should be loaded into the capillary tube for a Melting Range Determination? O Enough sample so that the solid is clearly visible under the magnifying lens, but not enough of a sample height to extend out of the heated range of the DigiMelt. O The tube should be filled all the way up. Only a sinige grain of solid can be added. This is often difficult to see under the magnifying lens. O The tube should be filled halfway up.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Destion Completion statu 2 3 QUESTION 4 2 5 W How much sample should be loaded into the capillary tube for a Melting Range Determination? O Enough sample so that the solid is clearly visible under the magnifying lens, but not enough of a sample height to extend out of the heated range of the DigiMelt. O The tube should be filled all the way up. S O Only a sinige grain of solid can be added. This is often difficult to see under the magnifying lens. O The tube should be filled halfway up. 6 QUESTION 5 You record the following melting ranges for your unknown, for known standards, and for mixed melting ranges: Unknown #14: 78-80 °C. QUESTION 6 Naphthalene: 78-80 °C Vanillin: 78-80 °C Mixed #14 with Napththalene: 66-75 °C Mixed #14 with Vanillin: 78-80 °C Which statement best summarizes unknown #14? O Unknown #14 is already a mixture of naphthalene and vanillin. O Unknown #14 may be vanillin, but not naphthalene. O Unknown #14 may be vanillin or naphthalene. O Unknown #14 may be naphthalene, but not vanillin. F2 7 # 8 What properties describe a good solvent for a single-solvent recrystallization? O Dissolves the solid when cold, but not when hot. 3 O Does not dissolve the solid at any temperature. O Dissolves the solid whether hot or cold. O Dissolves the solid when hot, but not when cold. Click Save and Submit to save and submit. Click Save All Answers to save all answers. 80 F3 9 E 100 D C $ 4 888 R 10 F % 5 Tv V ♫ F6 T #tv MacBook Air 6 G F6 Y B & 7 H A 00 F7 n с 8 N DII FB J 1 ( 9 K M ) F10
Transcribed Image Text:Destion Completion statu 2 3 QUESTION 4 2 5 W How much sample should be loaded into the capillary tube for a Melting Range Determination? O Enough sample so that the solid is clearly visible under the magnifying lens, but not enough of a sample height to extend out of the heated range of the DigiMelt. O The tube should be filled all the way up. S O Only a sinige grain of solid can be added. This is often difficult to see under the magnifying lens. O The tube should be filled halfway up. 6 QUESTION 5 You record the following melting ranges for your unknown, for known standards, and for mixed melting ranges: Unknown #14: 78-80 °C. QUESTION 6 Naphthalene: 78-80 °C Vanillin: 78-80 °C Mixed #14 with Napththalene: 66-75 °C Mixed #14 with Vanillin: 78-80 °C Which statement best summarizes unknown #14? O Unknown #14 is already a mixture of naphthalene and vanillin. O Unknown #14 may be vanillin, but not naphthalene. O Unknown #14 may be vanillin or naphthalene. O Unknown #14 may be naphthalene, but not vanillin. F2 7 # 8 What properties describe a good solvent for a single-solvent recrystallization? O Dissolves the solid when cold, but not when hot. 3 O Does not dissolve the solid at any temperature. O Dissolves the solid whether hot or cold. O Dissolves the solid when hot, but not when cold. Click Save and Submit to save and submit. Click Save All Answers to save all answers. 80 F3 9 E 100 D C $ 4 888 R 10 F % 5 Tv V ♫ F6 T #tv MacBook Air 6 G F6 Y B & 7 H A 00 F7 n с 8 N DII FB J 1 ( 9 K M ) F10
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