What is the mass in grams of #2.2xx10^-3# mol of Sb?

1 Answer
Sep 11, 2016


The mass of #2.2xx10^(-3)"mol Sb"# is #"0.27 g"#.


The mass of one mole (molar mass) of antimony, Sb, is 121.760 g/mol. This is the atomic weight of Sb on the periodic table written as g/mol.

To determine the mass of a substance when you know the moles, multiply the moles by the molar mass of the substance.

#2.2xx10^(-3)cancel"mol Sb"xx(121.760"g Sb")/(1cancel"mol Sb")="0.27 g Sb"# (rounded to two significant figures)