Molar concentration of the dye stock solution: 2.52e-5 mol/L Solutions(Dilutions) Absorbance (A)(a.u.) 1 0.086 2 0.179 3 0.366 4 0.532 Solution 1: 1.00 mL of Blue#1 Stock Solution and 19.00 mL of distilled water Solution 2: 2.00 mL of Blue#1 Stock Solution and 18.00 mL of distilled water Solution 3: 4.00 mL of Blue#1 Stock Solution and 16.00 mL of distilled water Solution 4: 8.00 mL of Blue#1 Stock Solution and 12.00 mL of distilled water   Using linear regression determine the absorbance/concentration relationship for the dye. [dye] =  x A I got 0.00001920x but the answer is wrong can someone please help?

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Q: Question 18

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Q: Question 20

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.