https://r2.erweima.ai/mathbot/image/1726680075586r3u7ylgn.pdf

The document appears to be a "Taller Preparación de Soluciones" (Solution Preparation Workshop) from the Universidad de Santander, specifically for a biochemistry course in medicine. It provides practical exercises for calculating and preparing medical solutions, focusing on key concepts like molarity, normality, and percentage solutions, with the goal of ensuring the safe and effective administration of intravenous fluids and medications.

Here are a few questions and example problems from the document:

1. **Dextrose Solution Preparation**: How would you prepare 1 liter of a 5% dextrose solution in water using anhydrous dextrose? 
2. **NaCl Dilution**: Given a stock solution of NaCl at 15% (w/v), how would you prepare 500 mL of a 0.9% (w/v) solution?
3. **Safe NaCl Administration**: Is it safe to administer 250 mL of a NaCl solution (0.154 mol/L) daily for a week, given that the weekly NaCl limit is 20 grams?
4. **Antibiotic Concentration**: Calculate the concentration in g/L for trimethoprim and sulfamethoxazole in a solution containing 25 mg of trimethoprim and 125 mg of sulfamethoxazole per 5 mL.
5. **Glucose Conversion**: Convert a plasma glucose concentration of 90 mg/dL to mmol/L, given the molecular formula of glucose (C₆H₁₂O₆).

These types of questions focus on real-world medical scenarios, reinforcing the importance of precise calculation in medical settings to prevent errors in patient treatment.

Would you like to work through one of these problems or need further explanation on a specific concept?

### Related Questions
1. How do you convert percentage solutions (w/v or w/w) into molarity?
2. What are the typical applications of molarity versus normality in medical settings?
3. How is the safety of intravenous fluid administration determined based on molarity?
4. Can you explain the difference between molarity and molality, and when each is used?
5. How do you calculate the dilution factor when preparing solutions from a stock concentration?

**Tip**: When converting between different concentration units (e.g., mg/dL to mmol/L), always start with the molecular weight of the compound, which helps ensure precision.

A diabetic patient needs a 5% dextrose solution in water for injection as part of fluid therapy. How would you prepare 1 liter of this solution using anhydrous dextrose? Explain the process step by step.

Learn how to prepare a 1-liter 5% dextrose solution using anhydrous dextrose, essential for medical fluid therapy. This step-by-step guide explains concentration calculations, percentage solutions, and safe preparation techniques. Suitable for medical and biochemistry students.

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