1. How many atoms are in the following compounds?
a) CaCl2_______ b) NH4OH_______ c) NaCl_______ d) N2O7_______ e) P2O5_______
f) KNO3_______ g) Al2(CO3)3_______ h) Na3PO4_____ i) Mg(NO3)2_______
2. Calculate the molar mass of the following compounds:
a) NaCl
b) Fe2O3
c) LiOH
d) NH3
e) AlPO4
3) How many grams of Ca are present in 3.28 moles?
4) How many grams of S are present in 5.39 moles?
5) How many moles of Ag are there in 4.98 gram?
6) How many atoms are present in 34.69 moles of Mg?
7) How many atoms are present in 0.529 moles of Li?
8) How many moles of Mn are present in 4.09 x 1024 atoms of Mn?
9) How many moles of Ni are present in 5.88 x 1019 atoms?
10) Calculate the number of molecules in 8.33 grams of O2
11) Calculate the number of particles in 32.8 grams of Cu2S.
12) Calculate the number of grams of lithium in 5.44 x 1021 atoms of lithium.