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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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Using the average atomic masses given inside the front cover of the text, calculate how many moles of each substance the following masses represent.

l type='a'>

  • 4.21 g of copper(II) sulfate
  • 7.94 g of barium nitrate
  • 1.24 mg of water
  • 9.79 g of tungsten
  • 1.45 lb of sulfur
  • 4.65 g of ethyl alcohol, C 2 H 5 OH

    i>12.01 g of carbon

    Interpretation Introduction

    (a)

    Interpretation:

    Number of moles of each substance the following masses represent should be calculated.

    Concept Introduction:

    The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a particular molecule.

    Molar mass=Mass of the sample in gramsNumber of moles

    Number of moles=Mass of the sample in gramsMolar mass.

    Explanation

    Molar mass of CuSO4 = { 63.55 + 32.07 + (3 × 16.00)} g/mol = 143

    Interpretation Introduction

    (b)

    Interpretation:

    Number of moles of each substance the following masses represent should be calculated.

    Concept Introduction:

    The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a molecule.

    Molar mass=Mass of the sample in gramsNumber of moles

    Number of moles=Mass of the sample in gramsMolar mass.

    Interpretation Introduction

    (c)

    Interpretation:

    Number of moles of each substance the following masses represent should be calculated.

    Concept Introduction:

    The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a molecule.

    Molar mass=Mass of the sample in gramsNumber of moles

    Number of moles=Mass of the sample in gramsMolar mass.

    Interpretation Introduction

    (d)

    Interpretation:

    Number of moles of each substance the following masses represent should be calculated.

    Concept Introduction:

    The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a molecule.

    Molar mass=Mass of the sample in gramsNumber of moles

    Number of moles=Mass of the sample in gramsMolar mass.

    Interpretation Introduction

    (e)

    Interpretation:

    Number of moles of each substance the following masses represent should be calculated.

    Concept Introduction:

    The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a molecule.

    Molar mass=Mass of the sample in gramsNumber of moles

    Number of moles=Mass of the sample in gramsMolar mass.

    Interpretation Introduction

    (f)

    Interpretation:

    Number of moles of each substance the following masses represent should be calculated.

    Concept Introduction:

    The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a molecule.

    Molar mass=Mass of the sample in gramsNumber of moles

    Number of moles=Mass of the sample in gramsMolar mass.

    Interpretation Introduction

    (g)

    Interpretation:

    Number of moles of each substance the following masses represent should be calculated.

    Concept Introduction:

    The molar mass, also known as molecular weight, is the sum of the total mass in grams of all the atoms that make up a mole of a molecule.

    Molar mass=Mass of the sample in gramsNumber of moles

    Number of moles=Mass of the sample in gramsMolar mass.

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