Determine the number of moles in each of the following:
45.2 g Ag



67.1 g Cr



53.9 g Mn



Determine the number of grams in each of the following:
1.56 mol K



2.5 mol Ba



110 mol He



Determine the mass in grams of each of the following:
5.04 x 1024 atoms N




2.01 x 1024 atoms Ca




8.32 x 1021 atoms Sn




Determine the number of particles contained in each of the following:
50.3 g Cu




145g Si




0.67 g Cl