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Question

What is the molar mass of methane,CH4?


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Solution

Step1. Molar mass

The mass of 1 mole of a substance is called its molar mass.

Step2. Formula for molar mass

Molar mass =Theatomicmassofelement×numberofatomsgiveninsubscript

Step3. Molar mass of CH4

Molar mass of CH4=TheatomicmassofCarbon+Theatomicmassofhydrogen

=12.01+4×1.0079gmol-1

=16.0416gmol-1

16gmol-1

Hence, the molar mass of CH4 is 16gmol-1.


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