   # Calculate the molar mass of each hydrated compound. Note that the water of hydration is included in the molar mass. (See page 85.) (a) H 2 C 2 O 4 · 2 H 2 O (b) MgSO 4 · 7 H 2 O, Epsom salt ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 2, Problem 72PS
Textbook Problem
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## Calculate the molar mass of each hydrated compound. Note that the water of hydration is included in the molar mass. (See page 85.)(a) H2C2O4 · 2 H2O(b) MgSO4 · 7 H2O, Epsom salt

(a)

Interpretation Introduction

Interpretation:

For the given molecules, the molar masses are needed to be calculated.

Concept introduction:

• Molar mass of a molecule can be calculated from its molecular formula by taking the sum of atomic masses of all the elements present in it.

### Explanation of Solution

The molecular formula of H2C2O4.2H2O, so the molar mass of compound is,

2×1.008g/mol(H)+2×12.01g/mol(C)+4×16g/mol(O)

(b)

Interpretation Introduction

Interpretation:

For the given molecules, the molar masses are needed to be calculated.

Concept introduction:

• Molar mass of a molecule can be calculated from its molecular formula by taking the sum of atomic masses of all the elements present in it.

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