What is the molar mass of cholesterol if 0.438 mol weighs 169.37 g? Hint: What is the definition of molar mass?

____(g)

Give the answer again with the correct number of significant figures.
____(g)

1 Answer
Truong-Son N.
Jan 26, 2018

Indeed, what is the definition of molar mass? Are the units #"g/mol"# or #"mol/g"#?

What then do you get if you write...

#"169.37 g"/"0.438 mols" = ??? "g"/"mol"#

It is the molar mass. With three sig figs in #"0.438 mols"#, round to three sig figs upon dividing.

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