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40 grams of sodium hydroxide was dissolved in 100 mL of distilled water. MW of NaOH: 40 g/mol. Use the density of water = 1 g/mL to solve for its mass. 1. What is the molarity, mol/L? Your answer in whole number, do not include the unit/s 2. What is the molality, mol/Kg? Your answer in whole number, do not include the unit/s 3. What is the % by mass of the solution? choose the letter of the correct answer A. 15% B. 20% C. 25% D. 30%

40 grams of sodium hydroxide was dissolved in 100 mL of distilled water. MW of NaOH: 40 g/mol. Use the density of water = 1 g/mL to solve for its mass. 1. What is the molarity, mol/L? Your answer in whole number, do not include the unit/s 2. What is the molality, mol/Kg? Your answer in whole number, do not include the unit/s 3. What is the % by mass of the solution? choose the letter of the correct answer A. 15% B. 20% C. 25% D. 30%

Chemical Principles in the Laboratory
Chemical Principles in the Laboratory
11th Edition
ISBN:9781305264434
Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Chapter24: The Standardization Of A Basic Solution And The Determination Of The Molar Mass Of An Acid
Section: Chapter Questions
Problem 1ASA
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40 grams of sodium hydroxide was dissolved in 100 mL of distilled water. MW of NaOH: 40 g/mol. Use the density of water = 1 g/mL to solve for its mass. 1. What is the molarity, mol/L? Your answer in whole number, do not include the unit/s 2. What is the molality, mol/Kg? Your answer in whole number, do not include the unit/s 3. What is the % by mass of the solution? choose the letter of the correct answer A. 15% B. 20% C. 25% D. 30%
Transcribed Image Text:40 grams of sodium hydroxide was dissolved in 100 mL of distilled water. MW of NaOH: 40 g/mol. Use the density of water = 1 g/mL to solve for its mass. 1. What is the molarity, mol/L? Your answer in whole number, do not include the unit/s 2. What is the molality, mol/Kg? Your answer in whole number, do not include the unit/s 3. What is the % by mass of the solution? choose the letter of the correct answer A. 15% B. 20% C. 25% D. 30%
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