CHEM120 Week 3 Virtual Lab: Solution Preparation Part I and Part II

CHEM120 Week 3 Virtual Lab: Solution Preparation Part I and Part II OL Lab 6: Solution Preparation: From salt to the solution Learning Objectives: • Prepare an aqueous solution of a specific con centration from a pure salt • Correctly use an analytical balance, a volumetric pipette, a volumetric flask, and a measuring cylinder • Explain the relationship between molarity and mass concentration Introduction Prepare to become a solution champion! In this simulation, you will complete all the steps involved in preparing an aqueous solution of given molarity from ammonium chloride – a water-soluble salt. Use that balance Your first mission will be to determine the exact amount of ammonium chloride needed for your solution. When the calculations are completed, you will move to your first workbench, where you’ll find an analytical balance. You will use this high-precision instrument to obtain just the right amount of the substance. It’s a tricky procedure, but you’ll have unlimited time and attempts to get it right. Glassware and quantitative transfer Moving on to the second workbench, you will explore and determine what glassware will be appropriate for you to use. Your lab guide and mentor, Dr. One, will walk you through the process of preparing the solution. You will have the freedom to use the equipment as you like, but only by following Dr. One’s instructions will you be successful in making the right solution. To make sure you can always redo the essential steps of the process, Dr. One will provide you with a fantastic reset button, so you can try again if you make a mistake. Solve the preparation In the end, only by carefully ensuring that the right amount of water and ammonium chloride is used can you make the correct solution. Are you prepared for solving how to perform a Solution Preparation? Part 1: Complete the Labster Lab: Solution Preparation: From salt to the solution Part 2: Report and Reflection Purpose: Describe in complete sentences and your own words, the purpose of this experiment. The purpose of this lab was to work with molar concentration. We learned that sometimes the concentration can be expressed by mass instead and it will work the same way but it is just being tracked in grams instead of moles. This lab was to show how to mike certain solutions, and how to use a scale, measure, and store properly. Observations: Record three observations from the simulation. We weighed salt (NH4Cl) and added it to a volumetric flask and mixed it around with some distilled water to get an accurate reading We used two different types of water bottles a small one and a big one. We also mixed it twice to prepare the solution to the right concentration. we had to transfer our solution into a proper storage container due to the flask not being a practical item to keep solutions stored in. We put it into one of the several blue- capped bottles. We marked the storage bottle with its contents Answer the questions below: 1. In this lab, you learned how to prepare solutions with a precise concentration. Where in your nursing career might this skill be needed? In the nursing profession, the preparation of IV solutions and injections is part of the duties. This is where the understanding and knowledge of solution concentration and their preparation will be useful. 2. Which piece of glassware did you use to prepare your solution in this lab and why? The piece of glassware I used to prepare my solution was a volumetric flask. I chose this piece of glassware due to the preciseness and the high level of measuring accuracy when handled correctly. It is used for precise measurement and is used to make up a solution that is to a known volume. 3. Calculate how many grams of NaCl are required to make 100 mL of a 1 M NaCl solution. Show your work in the space below. 1 M NaCl solution means there is 1 mole of NaCl in the 1 L of solution, the molar mass of NaCl is 58.44g/mol. This means that 58.44 g of NaCl with be there in 1 M of 1L NaCl solution. Mass = Molarity x molar mass x volume in liters is the equation Mass = (1mol/1L) x (58.44g/mol) x (100L/1000) = 5.844 g 4. Reflection: Consider what you learned from this simulation. Reflect on three to four key concepts that you learned in this lab exercise. How could the lessons learned in this virtual lab relate to a real-world situation in the community/world or your future career? Be specific in your answer (this should require 5-10 sentences). From what I have learned from this simulation, I believe that mixing a substance to get an accurate measurement would be helpful in the world of nursing. This is because sometimes we will have to mix IV fluids with other substances in them to better help our patients, we need to be able to calculate and measure the correct amount of substance. Another reason is when we get into pharmacology, different medicines can interact with other salts, etc in the body. Lastly, it does all lead down to pharmacology due to the fact that we need to understand the drugs, their effects on the body, and know the right dosages and conditions. The lesson we learned today will be beneficial when we make it into the pharmacology class because we will be working with different medications etc to be able to give our patients the right amount, and the correct medicine based on the molecular issues, and salt volume, etc. Grading Rubric: Activity Deliverable Points Part I Complete simulation and answer all questions 8 Part II Complete lab report and answer questions • Observation (3 points) • Purpose (1 point) • Questions (3 points) • Reflection (2 points) 9 Total Complete all lab activities 17