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- Benzaldehyde (Adsorbate): The substance that gets adsorbed.
- Alumina (Adsorbent): The solid surface that provides sites for adsorption.
- Acetonitrile (Mobile phase): The solvent/liquid that moves over the adsorbent.
To solve this, you have to break it down into the same "Select then Arrange" flow:
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Selection ($C$): * We need 3 Physics books. Since P1 is mandatory, we only need to choose 2 more from the remaining 4. Calculation: $\binom{4}{2} = 6$.
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We need 2 Math books from 4. Calculation: $\binom{4}{2} = 6$.
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Total selection combinations: $6 \times 6 = 36$.
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Arrangement ($P$): * We have 5 books (3 Physics, 2 Math).
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The "Gap Method" is best for the constraint "Math books not together."
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First, arrange the 3 Physics books: $3! = 6$ ways.
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This creates 4 possible gaps ( _ P _ P _ P _ ).
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We must place the 2 Math books into these 4 gaps: $^4P_2 = 12$ ways.
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Total arrangements per selection: $6 \times 12 = 72$.
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Final Calculation:
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$36 \text{ (selections)} \times 72 \text{ (arrangements)} = 2592$.
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Correct Answer: D (1200 or more)
In Acute Pancreatitis, the inflamed pancreas causes severe epigastric pain that radiates to the back. The pain is:
- Worsened by lying supine (pancreas presses on posterior abdominal wall)
- Relieved by leaning forward or assuming knee-chest (fetal) position
The knee-chest position reduces tension on the pancreatic retroperitoneal attachments and decreases pain.
Other key nursing interventions in acute pancreatitis:
- NPO (nil per os) — rests the pancreas and stops secretion stimulation
- IV fluids (aggressive fluid resuscitation — pancreatitis causes major third spacing)
- Analgesics (IV morphine or meperidine for pain)
- NG tube if vomiting is severe
- Monitor serum amylase and lipase (lipase is more specific)
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