Statements: 1. Joe is younger than Kathy. 2. Mark was born after Joe. 3. Kathy is older than Mark. If the first two statements are true, the third statement is:
Correct answer: A. True
- A. True
- B. False
- C. Uncertain
- D. None of these
Explanation
If Joe is younger than Kathy, then Kathy is older than Joe. If Mark was born after Joe, then Mark is also younger than Joe. Therefore, Kathy is older than Joe, who is older than Mark, which means Kathy must be older than Mark.
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Gas behaviour is explained through the kinetic molecular theory and the relationships among pressure, volume and temperature. Work includes STP, Boyle's and Charles's laws, absolute zero, the ideal gas equation, and the distinction between ideal and real gases, especially the effects of intermolecular forces and molecular volume.
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