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Questions and Answers
Which of the following is true about the formation of diamonds from elemental carbon?
Which of the following is true about the formation of diamonds from elemental carbon?
- Diamonds have imperfections that occur rapidly at high pressure and temperature.
- Diamonds can transform into graphite over time at low ambient temperature and pressure. (correct)
- Diamonds are formed at low pressure and temperature.
- Diamonds are a more stable form of carbon than graphite.
Which of the following describes the polymorphic forms of Theobroma oil?
Which of the following describes the polymorphic forms of Theobroma oil?
- Theobroma oil exists in four polymorphic forms: gamma, alpha, beta prime, and beta. (correct)
- Theobroma oil exists in three polymorphic forms: gamma, alpha, and beta.
- Theobroma oil exists in two polymorphic forms: alpha and beta.
- Theobroma oil exists in five polymorphic forms: gamma, alpha, beta, delta, and epsilon.
What is the melting temperature of the alpha form of Theobroma oil?
What is the melting temperature of the alpha form of Theobroma oil?
- 34.5°C
- 28°C
- 18°C
- 22°C (correct)
What is the melting temperature range of Theobroma oil?
What is the melting temperature range of Theobroma oil?
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Why can residual solvents be trapped in crystalline pharmaceutical solids?
Why can residual solvents be trapped in crystalline pharmaceutical solids?
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