Chapter
10 Practice #1 Name
____________________________________
Complete
the following table Show your work and include units

Formula 
Name 
Mass of 1 mole 
1 
Na_{2}S 


2 
NH_{4}Cl 


3 
CuF 


4 
CuF_{2} 


5 
PbSO_{4} 


6 

Nickel (II) chloride 

7 

Copper
(II) nitrate 

8 

Dinitrogen pentoxide 

9 

Sulfurous
acid 

10 

Hydrosulfuric acid 

Answer
the following questions completely. Show your work, include the units and use
the correct number of significant figures.
These
questions will take two steps
11. How many atoms are in 2.3 g of
Na?
12. How many molecules are there in
6.8 grams of CO_{2}?
13. How many grams would 6.8 x 10^{23}
formula units of CuCl_{2} be?
14. How many formula units are
there in 8.79 g of K_{2}S?
15. How many molecules are there in
8.8 grams of SO_{2}?
16. How many grams would 4.65 x10^{22}
molecules of N_{2}O_{4} be?
17. How many formula units are
there in 4.11 g of (NH_{4})_{2}SO_{3}?
These
questions should take three steps
18. How many atoms are in 2.3 g of NaF?
19. How many atoms are there in 3.7
g of (NH_{4})_{3}PO_{4}?
20. How many ions are there in 4.5
g of (NH_{4})_{3}PO_{4}?