Explanation The chemical formula of the compound is CH 4 So, the compound has one C (carbon) atom and 4 H (hydrogen) atoms. Now, the atomic weight of C (from the periodic table): 12.011 amu And the atomic weight of H (from the periodic table): 1.008 amu There are 1 C and 4 H atoms in one molecule of CH 4 Hence, the molar mass of CH 4 will be: = 12.011 × number of C atoms + 1

9th Edition

ISBN: 9781337399425

Author: Steven S. Zumdahl, Donald J. DeCoste

Publisher: Cengage Learning

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Chapter 8, Problem 26QAP

Interpretation Introduction

Interpreation

Molar mass of 1 CH₄ molecule should be calculated.

Concept introduction:

Molar mass of a substance is defined as mass of 1 mole of the that substance. It is calculated as gram per mole thus, its unit is g/mol. The chemical formula is used to calculate the molar mass of a compound.

For a molecular formula say AB2 molar mass will be sum of molar mass of element A and twice the molar mass of element B.

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Chapter 8, Problem 25QAP

Chapter 8, Problem 27QAP

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