Study Guide
Chpt. 9-10

Calculate the Total Number of Atoms Present in the Following Expressions
1) Na3P-          2) K2SO4-          3) 2Al2S3-          4) 5K3P-          

5) Al2(CO3)3-     6) (NH4)2S-         7.) 3Ca(NO3)2-      8.) 2Al2(S04)3-

II. Balance the following equations and indicate whether the reaction is: S-synthesis; D-decomposition;
    SR-single replacement; DR-double replacement.                       Reaction Type:

1.) KBr + MgS --> K2s + MgBr2                                                 _______
2.) Al + HBr --> AlBr3 + H2                                                   _______
3.) B + O2 --> B2O3                                                           _______
4.) Fe(NO3)2 + Na --> Na(NO3) + Fe                                            _______
5.) c6H12O6 --> C + H2O                                                        _______

III. Complete and Balance the Following Equations

1.) AlCl3 + Na2S --> _______ + NaCl
2.) NaClO3 --> NaCl + _______
3.) Al2(CO3)3 + _______ --> Al(PO4) + Mg(CO3)
4.) Al2(CO3)3 + KI --> K2(CO3) + _______
5.) P4 + O2 --> _______

IV. Define

1.  Coefficient
2.  

Valence #'s  
Al +3
Cl -1
Na +1
S  -2
Br -1
(CO3) -2
Mg +2
K  +1
P  +5
O  -2
I  -1
(PO4) -3



I. Calculate the following 

1.) How many moles of Al(SO4)3 are needed to react with 12 moles of KI according to the following equation.
                         Al2(SO4)3 + 6KI --> 3K2(SO4) + 2AlI3

2.) How many moles of K2(SO4) are produced when 3 moles of Al2(SO4)3 reacts with an unlimited supply of KI
                         Al2(SO4)3 + 6KI --> 3K2(SO4) + 2AlI3

3.) How many moles of AlI3 are produced if 7 moles of K2SO4 are aslo found produced as described in the following equation
                         Al2(SO4)3 + 6KI --> 3K2(SO4) + 2AlI3

II. Calculate the follwing (atomic mass - Al=27, O=16)

1.) How many grams of oxygen are needed to burn 54g of Aluminum as shown in the following equation
                         4Al + 3O2 --> 2Al2O3

2.) How many grams of Al2O3 are produced when 162g of Aluminum are burned as shown in the equation below
                         4Al + 3O2 --> 2Al2O3

3.) How many grams of oxygen are needed to burn aluminum in order produce 510g of 2Al2O3 as shown below
                         4Al + 3O2 --> 2Al2O3