## Chemistry: A Molecular Approach (3rd Edition)

$3.1\ g\ U$
1.Use Avogadro's number and the molar mass of uranium as conversion factors in order to determine the number of grams of uranium. 2. $7.9\times10^{21}\ atoms\ U\times\frac{1\ mol\ U}{6.022\times 10^{23}\ atoms\ U}\times\frac{238.03\ g \ U}{1\ mol\ U} = 3.1\ g\ U$