FINAL EXAM CHEM 1310 FS11 VERSION GREEN Name: ____________________

1.|How many liters of chlorine gas at 25°C and 0.950 atm can be produced by the reaction of 12.0 g of MnO2? MnO2(s) + 4HCl(aq) ® MnCl2(aq) + 2H2O(l) + Cl2(g)|
A)|3.55 L|
B)|3.09 L|
C)|0.138 L|
D)|5.36 ´ 10-3 L|
E)|0.282 L|

2.|A 6.0-ft person weighs 168 lb. What is this person's height in meters and weight in kilograms? (1 lb = 453.6 g; 1 m = 3.28 ft.)|
A)|5.4 m, 76.2 kg|
B)|1.8 m, 76.2 kg|
C)|2.3 m, 43.2 kg|
D)|1.8 m, 7620 kg|

3.|The speed of sound in air at room temperature is about 343 m/s. What is this speed in miles per hour? (1 mi = 1609 m.)|
A)|12.8 mph|
B)|343 mph|
C)|767 mph|
D)|46020 mph|

4.|The oxidation number of Fe in K3Fe(CN)6 is|
A)|-3|
B)|+3|
C)|+2|
D)|-4|
E)|+1|

5.|What is 25.4 mg when converted to kilograms?|
A)|2.54 kg|
B)|2.54 ´ 104 kg|
C)|2.54 ´10–5 kg|
D)|2540 kg|

6.|What is the formula for copper (II) cyanide?|
A)|Cu(CN)2|
B)|Cu2CN|
C)|CuNCO|
D)|CuCN|

7.|What is the molar mass of acetaminophen, C8H9NO2?|
A)|125 g/mol|
B)|162 g/mol|
C)|76 g/mol|
D)|43 g/mol|
E)|151 g/mol|

8.|Calculate the mass of iron(II) sulfide formed when 27.66 g of Fe reacts with 14.44 g of S.|
A)|9.17 g|
B)|5.27 g|
C)|39.60 g|
D)|14.44 g|
E)|43.54 g|

9.|Aluminum is a lightweight metal (density = 2.70 g/cm3) used in aircraft construction, high-voltage transmission lines, beverage cans, and foils. What is its density in kg/m3?|
A)|8.2 ´ 102 kg/m3|
B)|2.70 ´ 103 kg/m3|
C)|4.30 ´ 103 kg/m3|
D)|2.70 ´ 104 kg/m3|

10.|How many atoms are in 5.54 g of F2?|
A)|0.146 atoms|
B)|8.78 ´ 1022 atoms|
C)|1.76 ´ 1023 atoms|
D)|0.292 atoms|
E)|6.02 ´ 1023 atoms|

11.|A sample of air occupies 3.8 L when the pressure is 1.2 atm. What volume does it occupy at 6.6 atm? (The temperature is kept constant.)|
A)|0.69 L|
B)|20.9 L|
C)|0.58 L|