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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 4, Problem 38E
Textbook Problem
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Acetone ( C 3 H 6 O ) is used as nail polish remover. If the amount of acetone used to remove the polish from one fingernail is 0 .32 g, how many molecules were used?

Interpretation Introduction

Interpretation:

The number of acetone molecules (C3H6O) in the given amount of acetone is to be calculated.

Concept Introduction:

The characteristic mass of a compound is considered as the formula mass of the compound, which is obtained by adding the atomic masses of all the atoms.

A conversion factor is considered as numerical ratio in order to change one unit into another.

The formula mass of a compound in amu is numerically equal to the molar mass in gram/mol.

Explanation of Solution

Given information: The amount of acetone used to remove the polish from a fingernail is 0.32g.

The molar mass of acetone (C3H6O) =58.08g/mol

Avogadro’s number =6.022×1023

A conversion factor between grams of acetone (C3H6O) and moles of acetone (C3H6O) can be obtained with the help of Avogadro’s number as follows:

(0

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Chapter 4 Solutions

Chemistry In Focus
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