Study Guide
Chpt. 12

I. Explain the significance of the following terms

1.) Boyles Law-

2.) Charles Law-

3.) Gay Lussacs Law-

4.) Direct Relationship-

5.) Inverse Relationship-

6.) Combined Gas Law-

7.) Ear Anatomy (labeled Drawing)-





8.) The Bends (SCUBA diving)-

9.) Cracking Knuckles-

10.) Fix-a-Flat cans-

11.)STP-

12.) Molar Volume-

13.) Kelvin Scale-

14.) Hot Air Balloon-




II. Complete

1.) High in hte mountains, Richard checked the  pressure of his car tires and observed that
 they had 202.5 kPa of pressure.  That morning, the temperature was -19.0oC. Richard 
 then drove all day, traveling through the desert in the afternoon.  The temperature of the tires
 increased to 75.0oC because of the hot roads.  What was the new tire pressure? 
(Volume remained Constant) What is the percent increase in pressure? [ans: 277kPa]

2.) A quantity of gas exerts a pressure of 98.6 kPa at a temperature of 22.0oC.  
If the volume remains unchanged, what temperature will it exert at a pressure of 88.6 kPa. [ans: -3oC]

3.) A balloon is placed in  apressure chamber. Its volume and pressure are 0.857 dm3
 and 101.3 kPa.  The temperature of the chamber is 37oC. What is the balloons new volume
 if the pressure chamber's pressure is decreased to 48.3 kPa and the temperature drops to 
 23oC. [ans: 1.7 dm3]

4.) When measured at STP, a quantity of gas has a volume of 500 dm3. what Volume
 will it occupy at 0oC and 93.3 kPa> [ans: 542.8 dm3]

5.) Iron(II) sulfide reacts with hydrochloric acid as follows:
       FeS(s) + 2HCl(aq) --> FeCl2(aq) + H2S(g)
    What volume of H2S, measured at 30oC and 95.1 kPa, will be produced when 132g of FeS reacts
                       {atomic mass fe=56    s=32   h=1}      [ans: 39.7 dm3]

6.) How many grams of zinc (Zn) reacts with an excess of hydrochloric acid to produce a volume of 
14.8 dm3 of hydrogen gas (H2) at a temperature of 25oC and a pressure of 98.3 kPa?
                         {atomic mass Zn=65    H=1    Cl=35.5}         [ans: 38.2]