What is the molar mass of #CH_4#?

1 Answer

Answer:

The molar mass should be #16.04 \ "g/mol"#.

Explanation:

To find the molar mass of any compound, we multiply all the elements inside the compound by its subscripts and their molar masses, which is their atomic mass, but in #"g/mol"#, as #1 \ "amu"=1 \ "g/mol"#.

And so,

#m_(CH_4)=m_C+m_(H_4)#

#=>m_(CH_4)=m_C+4m_H#

On the periodic table, carbon has a molar mass of #12.0107 \ "g/mol"#, while hydrogen has a molar mass of #1.00794 \ "g/mol"#.

Therefore, the molar mass is,

#m_(CH_4)=(12.0107+4*1.00794) \ "g/mol"#

#=16.04246 \ "g/mol"#

#~~16.04 \ "g/mol"#