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Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: What is the molality of a 32.0% by weight aqueous solution of acetone (C  3H6O)?A. 8.10B. 7.80C. 7.12D. 6.56E. 5.74

Solution: What is the molality of a 32.0% by weight aqueous solution of acetone (C  3H6O)?A. 8.10B. 7.80C. 7.12D. 6.56E. 5.74

Problem

What is the molality of a 32.0% by weight aqueous solution of acetone (C  3H6O)?

A. 8.10

B. 7.80

C. 7.12

D. 6.56

E. 5.74

Solution

We’re being asked to calculate for the molality of 32.0 % by weight aqueous solution of acetone (C3H6O). 

When calculating for molality, we use the following equation:

Aqueous solution → water is the solvent

                                   Solute → acetone


We will calculate the molality of the solution using the following steps:

Step 1. Determine the composition of the solution.
Step 2. Calculate the moles of the solute.
Step 3. Calculate the mass of the solvent (in kg).
Step 4. Calculate the molality of the solution.


Step 1. Determine the composition of the solution.

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