The molar mass of is 12 g.

CHEMISTRY · Multi-part · A Level · Chemistry · Amount of substance · Amount of substance

Problem

The molar mass of

^{12}\text{C}

is 12 g. (1) Calculate the mass of one atom of

^{12}\text{C}

. (2) The unified atomic mass unit,

u

, is defined as

\frac{1}{12}

of the mass of a

^{12}\text{C}

atom. Show that the value for

u

1.66 \times 10^{-27}

kg.