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To determine the molar mass of an unknown, a student dissolved 0.201 gr of the unknown in 40 gr cyclohexane. If the freezing point decreases by 0.7°C, which of the following could be the unknown? (Note: Kt cyclohexane = 20.5 Kg.°C/mol) 1,4_dichlorobenzene (Mm = 147 g/mol) Naphthalene (Mm = 128.17 g/mol) Biphenyl (Mm= 154.21 g/mol) Phenol (Mm = 94.11 g/mol)

To determine the molar mass of an unknown, a student dissolved 0.201 gr of the unknown in 40 gr cyclohexane. If the freezing point decreases by 0.7°C, which of the following could be the unknown? (Note: Kt cyclohexane = 20.5 Kg.°C/mol) 1,4_dichlorobenzene (Mm = 147 g/mol) Naphthalene (Mm = 128.17 g/mol) Biphenyl (Mm= 154.21 g/mol) Phenol (Mm = 94.11 g/mol)

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter13: Solutions And Their Behavior
Section13.4: Colligative Properties
Problem 2RC
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To determine the molar mass of an unknown, a student dissolved 0.201 gr of the unknown in 40 gr cyclohexane. If the freezing point decreases by 0.7°C, which of the following could be the unknown? (Note: K₁ cyclohexane = 20.5 Kg.°C/mol) 1,4_dichlorobenzene (Mm = 147 g/mol) Naphthalene (Mm = 128.17 g/mol) Biphenyl (Mm= 154.21 g/mol) Phenol (Mm = 94.11 g/mol)
Transcribed Image Text:To determine the molar mass of an unknown, a student dissolved 0.201 gr of the unknown in 40 gr cyclohexane. If the freezing point decreases by 0.7°C, which of the following could be the unknown? (Note: K₁ cyclohexane = 20.5 Kg.°C/mol) 1,4_dichlorobenzene (Mm = 147 g/mol) Naphthalene (Mm = 128.17 g/mol) Biphenyl (Mm= 154.21 g/mol) Phenol (Mm = 94.11 g/mol)
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