Chemistry X
FINAL Review Sheet #5
Due the day after the Ch. 15, 19 Test
Name: __________________________
Block: _______ Date: _______
1-6. Write names for each of the following compounds: (1 pt. each)
a. P2O5
_________________________
d. Li2SO3
_________________________
b. AuCl3
_________________________
e. Mg(ClO) 2
_________________________
c. Fe3N2
_________________________
f. Ni(ClO3) 2
_________________________
Write balanced equations for each of the following: (2 pt. each)
7-8. Rubidium nitrite is dissolved (include subnotations).
9-10. Rubidium nitrite is dissolved (include subnotations).
11-12. Ammonia gas decomposes into its elements (include subnotations).
13-14. Potassium Carbonate decomposes into its elements (include subnotations).
15-16. Solutions of Barium chloride and silver nitrate are mixed (include subnotations).
17-18. How much energy is released when 15.0 grams of ice melt? (S.H. = 4.18 J/g°C, ∆Hfus = 6.0 kJ/mol,
∆Hvap = 40.79 kJ/mol) (2 pt.)
19-21. Use Hess's law and the following thermochemical equations to determine the ∆Hrxn for the
following reaction: 2 ZnO (s) + 2 S (s)  2 ZnS (s) + O2 (g) (3 pt.)
Zn (s) + 1/2 O2 (g)  ZnO (s) ; ∆H = -348 kJ
H2 (g) + S (s)  H2S (g) ; ∆H = -21 kJ
Zn (s) + H2S (g)  ZnS (s) + H2 (g) ; ∆H = -185 kJ
22-23. If a sample of gas occupies 11.5 L at 21 °C and 723 mmHg, at what pressure will it occupy 15.0 L
(assuming constant temperature)? (2 pt.)
24-25. How much heat is required to raise 150. mL of liquid water from 20 °C to water vapor at 100°C?
(S.H. = 4.18 J/g°C, ∆Hfus = 6.0 kJ/mol, ∆Hvap = 40.79 kJ/mol) (2 pt.)
26-27. If 25.0 grams of Oxygen react with 25.0 grams of methane (CH4), how many liters of carbon
dioxide would be formed at room conditions? (2 pt.)
28-29. What's the density of oxygen gas at STP? (2 pt.)
30-32. How many liters of oxygen (@ room conditions) are needed to completely combust 5.00 grams of
methane, CH4. Write a balanced equation and show work for credit. (3 pt.)
Expt. #3 - "Warming and Cooling Behavior"
Analyze the graph to answer the questions below.
T
e
m
p
e
r
a
t
u
r
e
30°C
D
20°C
E
C
B
-5°C
-15°C
A
Time (min)
33. At what temperature does the unknown melt? ______________
34. Which line(s) represent potential energy changes? ______________
35. Which line(s) represent kinetic energy changes? ______________
36-37. If more of the unknown were used how would that affect
i. The lines that represent kinetic energy changes? ________________________________
ii. The lines that represent potential energy changes? ______________________________