Only number 2. It has parts a , b, c the MSDS and find specific safety concerns for each chemical.2) In this lab we will be working with solutions, which are homogenous mixtures of two or moresubstances. The solvent is the substance in greater amount (water in this experiment) and the soluteis the substance in lesser amount. Concentration is the term used describe the amount of solute ina given amount of solution (solvent + solute). Concentration can be measured in many differentunits, grams solute per mL solution, % mass to volume (grams in 100 mL of solution), Molarity(moles solute per L solution) among others. Even though we have not learned about solutions inlecture, we know enough about units to understand and work with concentrations in the lab. Answerthe following questions about concentrations. If you get stuck, visit Chapter 9 in your textbook.a. If 15.0 g of sodium chloride (NaCl) are present in 250 mL of aqueous solution, what is theconcentration in the terms of mass/volume percent (g/100 mL)?b. What is the molarity (M or moles/L) of this solution?What happens to the molarity when the solution is diluted, i.e., 100 mL of water (solvent)is added?с.3) In this lab, we will be measuring absorbance, which is the amount of light absorbed by a solution3;absorbance is proportional to the concentration of a sample, expressed in the Beer-Lambert Law.Before answering the following questions, explore explore absorbance, concentration,transmittance, and path length, with this PHET simulation:https://phet.colorado.edu/sims/html/beers-law-lab/latest/beers-law-lab en.htmla. Transmittance is the ratio of intensity of light transmitted through the sample to the incidentlight (light entering the sample). Absorbance (4) is the amount of light absorbed by thesolution. Given both of these definitions, what is the relationship between absorbance andtransmittance? (Hint: in addition to the simulation mentioned above, you should also checkout the instructions for the Vernier spectrophotometer you'll be using in this week's lab!)b. What is the relationship between absorbance and concentration? (Hint: See Figure 14.5 inyour Interactive General Chemistry textbook or e-text.)

Given: Mass of NaCl = 15.0 g. And volume of solution = 250 mL.

Answered: 2) In this lab we will be working with…

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter88: Column Chromatography

Section: Chapter Questions

Problem 5P

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