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Asolution of cthanol Ld=0.795glmL) and water (H20) is Prefacd IS Placing30.0 ML of ethanol in a 250.0 mL volumetrie flask and diluting with water to the flask etched mark. a2 what is the molarity of the ethano l in this solution: b) Noxt, 25.0 mL of the solution abore. is diluteo to a final volwne of 50 0,0 mL. what is the next molarity of the diluting with Solutiona

Asolution of cthanol Ld=0.795glmL) and water (H20) is Prefacd IS Placing30.0 ML of ethanol in a 250.0 mL volumetrie flask and diluting with water to the flask etched mark. a2 what is the molarity of the ethano l in this solution: b) Noxt, 25.0 mL of the solution abore. is diluteo to a final volwne of 50 0,0 mL. what is the next molarity of the diluting with Solutiona

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Ethanol Solution Preparation and Molarity Calculation** A solution of ethanol (\( \text{d} = 0.795 \, \text{g/mL} \)) and water (\( \text{H}_2\text{O} \)) is prepared by placing 30.0 mL of ethanol in a 250.0 mL volumetric flask and diluting with water to the flask's etched mark. **a) What is the molarity of the ethanol in this solution?** **b) Next, 25.0 mL of the solution above is diluted to a final volume of 500.0 mL. What is the new molarity of the solution after diluting with water?** *Note for educators: Molarity is calculated using the formula \( \text{Molarity (M)} = \frac{\text{moles of solute}}{\text{liter of solution}} \). To find the moles of ethanol, the density and volume can be used to calculate mass, which can then be converted to moles using the molar mass of ethanol.*
Transcribed Image Text:**Ethanol Solution Preparation and Molarity Calculation** A solution of ethanol (\( \text{d} = 0.795 \, \text{g/mL} \)) and water (\( \text{H}_2\text{O} \)) is prepared by placing 30.0 mL of ethanol in a 250.0 mL volumetric flask and diluting with water to the flask's etched mark. **a) What is the molarity of the ethanol in this solution?** **b) Next, 25.0 mL of the solution above is diluted to a final volume of 500.0 mL. What is the new molarity of the solution after diluting with water?** *Note for educators: Molarity is calculated using the formula \( \text{Molarity (M)} = \frac{\text{moles of solute}}{\text{liter of solution}} \). To find the moles of ethanol, the density and volume can be used to calculate mass, which can then be converted to moles using the molar mass of ethanol.*
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