   Chapter 2, Problem 62PS

Chapter
Section
Textbook Problem

Calculate the mass, in grams, of each the following:(a) 4.24 mol of gold(b) 15.6 mol of He(c) 0.063 mol of platinum(d) 3.63 × 10–4 mol of Pu

(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 gold is given as 4.24mol.

Molar mass of gold is 197g/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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