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Chemistry & Chemical Reactivity

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

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

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

Calculate the amount (moles) represented by each of the following:

(a) 127.08 g of Cu

(b) 0.012 g of lithium

(c) 5.0 mg of americium

(d) 6.75 g of Al

(a)

Interpretation Introduction

Interpretation: For the given amounts of atoms in moles, the mass conversions are needed to be calculated.

Concept introduction:

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

    Numberofmoles=MassingramsMolarmass 

Explanation

The amount of copper is given as 127.08g.

Molar mass of copper is 63.546g/mol.

Conversion formula for mass of an atom into number moles,

    Numberofmoles=MassingramsMol

(b)

Interpretation Introduction

Interpretation: For the given amounts of atoms in moles, the mass conversions are needed to be calculated.

Concept introduction:

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

    Numberofmoles=MassingramsMolarmass 

(c)

Interpretation Introduction

Interpretation:

For the given amounts of atoms in moles, the mass conversions are needed to be calculated.

Concept introduction:

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

    Numberofmoles=MassingramsMolarmass 

(d)

Interpretation Introduction

Interpretation:

For the given amounts of atoms in moles, the mass conversions are needed to be calculated.

Concept introduction:

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

    Numberofmoles=MassingramsMolarmass 

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