What is the molar mass of benzene?

1 Answer
Aug 10, 2017

Answer:

#78.114# #"g/mol"#

Explanation:

To find the molar mass of a compound, we first look at a periodic table to find the molar masses of each element in the compound:

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The chemical formula for benzene is

#ul("C"_6"H"_6#

So we need only look at the values for carbon and hydrogen.

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We find that the molar masses are

  • #"C":# #12.01# #"g/mol"#

  • #"H":# #"1.01# #"g/mol"#

We need to multiply these values by however many of each element there is in the compound, so we would then have

  • #"C":# #12.011color(white)(l)"g/mol" xx 6 = color(red)(ul(72.066color(white)(l)"g/mol"#

  • #"H":# #1.008color(white)(l)"g/mol" xx 6 = color(green)(ul(6.048color(white)(l)"g/mol"#

Finally, we add all the component elements up:

#color(red)(72.066color(white)(l)"g/mol") + color(green)(6.048color(white)(l)"g/mol") = color(blue)(ulbar(|stackrel(" ")(" "78.114color(white)(l)"g/mol"" ")|)#