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Chemistry & Chemical Reactivity

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

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Chapter
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BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

You are given 0.10-g samples of K, Mo, Cr, and Al. List the samples in order of the amount (moles), from smallest to largest.

Interpretation Introduction

Interpretation:

The given samples are needed to be arranged in the order of smallest to largest in numbers of atoms containing samples.

Concept introduction:

Molar masses of K, Mo, Cr and Al are 4g, 39g, 95.9g, 51.9 and 26.9 respectively.

  • Conversion formula for mass of an atom into number moles,

    Numberofmoles=MassingramsMolarmass 

  • Equation for finding number of atoms from number of moles of an atom,

    Numberofatoms=numberofmolesofatom×6.022×1023atoms/mol

Explanation

Conversion formula for mass of an atom into number moles,

    Numberofmoles=MassingramsMolarmass 

The mass taken for all sample are equal.

Therefore,

  Numberofmoles

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