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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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Calculate the percent by the mass of the element whose symbol occurs fist in the following compounds, formulas.

l type='a'>

  •    C 6 H 6 ( l )
  • i>   Na 2 SO 4 ( s )

    i>   CS 2 ( l )

    i>   AlCl 3 ( s )

    i>   Cu 2 O ( s )

    i>   CuO ( s )

    i>   Co 2 O 3 ( s )

    i>   C 6 H 12 O 6 ( s )

    Interpretation Introduction

    (a)

    Interpretation:

    The percent by mass of the element whose symbol occurs first in the following compound’s formula should be calculated.

    Concept Introduction:

    Percent by mass of an element can be calculated by the following equation.

    Percent by mass %=Mass of particular element per mole of compoundMolar mass of the compound× 100.

    Explanation

    Molar mass of C6 H6 ( l ) = {(6 × 12.01) + (6 × 1.008)} g/mol = 78.108 g/mol

    Mass of C present per mole of C6 H6 = (6 × 12.01) g/mol = 72.06 g/mol

    Percent by mass %=Mass of particular

    Interpretation Introduction

    (b)

    Interpretation:

    The percent by mass of the element whose symbol occurs first in the following compound’s formula should be calculated.

    Concept Introduction:

    Percent by mass of an element can be calculated by the following equation.

    Percent by mass %=Mass of particular element per mole of compoundMolar mass of the compound× 100.

    Interpretation Introduction

    (c)

    Interpretation:

    The percent by mass of the element whose symbol occurs first in the following compound’s formula should be calculated.

    Concept Introduction:

    Percent by mass of an element can be calculated by the following equation.

    Percent by mass %=Mass of particular element per mole of compoundMolar mass of the compound× 100.

    Interpretation Introduction

    (d)

    Interpretation:

    The percent by mass of the element whose symbol occurs first in the following compound’s formula should be calculated.

    Concept Introduction:

    Percent by mass of an element can be calculated by the following equation.

    Percent by mass %=Mass of particular element per mole of compoundMolar mass of the compound× 100.

    Interpretation Introduction

    (e)

    Interpretation:

    The percent by mass of the element whose symbol occurs first in the following compound’s formula should be calculated.

    Concept Introduction:

    Percent by mass of an element can be calculated by the following equation.

    Percent by mass %=Mass of particular element per mole of compoundMolar mass of the compound× 100.

    Interpretation Introduction

    (f)

    Interpretation:

    The percent by mass of the element whose symbol occurs first in the following compound’s formula should be calculated.

    Concept Introduction:

    Percent by mass of an element can be calculated by the following equation.

    Percent by mass %=Mass of particular element per mole of compoundMolar mass of the compound× 100.

    Interpretation Introduction

    (g)

    Interpretation:

    The percent by mass of the element whose symbol occurs first in the following compound’s formula should be calculated.

    Concept Introduction:

    Percent by mass of a element can be calculated by the following equation.

    Percent by mass %=Mass of particular element per mole of compoundMolar mass of the compound× 100.

    Interpretation Introduction

    (h)

    Interpretation:

    The percent by mass of the element whose symbol occurs first in the following compound’s formula should be calculated.

    Concept Introduction:

    Percent by mass of a element can be calculated by the following equation.

    Percent by mass %=Mass of particular element per mole of compoundMolar mass of the compound× 100.

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