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Chapter 4.9, Problem 4.1ACP
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### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

#### Solutions

Chapter
Section
BuyFindarrow_forward

### Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

# Identify the factor labeled 4 in the strategy map (a) Density H2O(ℓ), 1.00 g/mL (b) Density of O2(ℓ), 1.14 g/mL (c) molar mass of O2, 32.0 g/mol (d) molar mass of H2O, 18.0 g/mol below. Labels 1 through 5 are the factors used in each step of the calculation, and A is the mass of O2 and B is the amount of H2O.

Interpretation Introduction

Interpretation:

The factor labeled 4 in the given strategy map has to be identified.

Concept introduction:

• The relation between the number of moles and mass of the substance is ,

Numberofmole=MassingramMolarmass

Massingramofthesubstance=Numberofmole×Molarmass

• The molar mass of an element or compound is the mass in grams of 1 mole of that substance, and it is expressed in the unit of grams per mole (g/mol).
• Concentrationofsubstance=Amountof substancevolumeofthesubstance
• Amountof substance=Concentrationofsubstance×volumeofthesubstance
Explanation

Reason for the correct option:

The given strategy map is,

Â  Volâ€‰O2â€‰â†’1â€‰Aâ€‰â†’2â€‰molâ€‰O2â€‰â†’3â€‰â€‰Bâ€‰â€‰â†’4Massâ€‰â€‰ofâ€‰H2Oâ†’5â€‰â€‰Volâ€‰H2O

Here A is the mass of O2 and B is the amount of H2O.

The relation between the number of moles and mass of the substance is ,

â€ƒâ€‚Â â€‚Â Numberâ€‰ofâ€‰moleâ€‰â€‰=â€‰Massâ€‰inâ€‰gramMolarâ€‰massâ€‰

Â Â Â Â  Massâ€‰inâ€‰gramâ€‰ofâ€‰theâ€‰â€‰su

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