A laboratory needs to prepare a 20% saline solution. They have 100 mL of a 10% saline solution and another 100 mL of a 40% saline solution. How much of each solution should be mixed to obtain exactly 150 mL of a 20% saline solution?

Sun, 19 Apr 2026 19:45:38 +0000

**A laboratory needs to prepare a 20% saline solution. They have 100 mL of a 10% saline solution and another 100 mL of a 40% saline solution. How much of each solution should be mixed to obtain exactly 150 mL of a 20% saline solution?** In laboratories and clinical settings, precision matters—especially when preparing solutions used in testing and patient care. A common challenge is creating a stable, effective 20% saline solution, a staple in many medical and scientific applications. When precise volumes are unavailable, understanding how to mix known concentrations becomes essential. This question reflects growing interest in saline formulation accuracy, driven by educational seekers, educators, and professionals who value reliable methods in chemistry, healthcare, and research. **Why preparing a 20% saline solution is gaining attention in the US** With increased public engagement in health and science education, practical lab techniques are becoming more relevant. Accurate saline preparation underpins various uses—from diluting medications to calibrating instruments—making it vital for both professionals and informed laypeople. Recent digital trends show users seeking clear, step-by-step guidance on solution mixing, reflecting a nuanced curiosity about lab processes that aligns with broader science literacy movements across the US. Understanding how to balance concentrations effectively helps bridge the gap between theory and reliable practice.