   Chapter 2, Problem 61PS

Chapter
Section
Textbook Problem

Calculate the mass, in grams, of each the following:(a) 2.5 mol of aluminum(b) 1.25 × 10–3 mol of iron(c) 0.015 mol of calcium(d) 653 mol of neon

(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 aluminum is given as 2.50mol.

Molar mass of aluminum is 26.982g/mol.

Conversion formula for number moles of an atom into mass in grams,

Numberofmoles×Molarma

(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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