1. Boyle
In a thermonuclear device,the pressure of the 0.50 L of gas within the bomb casing reaches 4.0x106atm. When the bomb casing is destroyed by the explosion, the gas is released into the atmosphere where it reaches a pressure of 1.00 atm. What is the volume of the gas after the explosion?

2. P1V1 = P2V2 V2 = P1V1 . V2 = (4.0 x 106 atm)(0.50 L) .
V2 = 2.0 x 106 L
Boyle

3. Gay-Lussac
A sample of neon is at 89oC and kPa. If the pressure changes to 145 kPa and the volume remains constant, find the new temperature, in K.

4. P1 = P2 T2 = T1P2 T1 T2 P1 . T2 = (362K) (145 kPa) . T2 = 427 K
T1 = 89oC = 362 K P1 = 123kPa
T2 = ?K P2 = 145 kPa
P1 = P2 T2 = T1P2
T T P1 .
T2 = (362K) (145 kPa) .
(123 kPa)
T2 = 427 K
Gay-Lussac

5. Combined
A gas at STP occupies 28 cm3 of space. If the pressure changes to 3.8 atm and the temperature increases to 203oC, find the new volume in mL.

6. V2 = (1atm)(0.028L)(n2)(476K) . P1V1 = P2V2 V2 = P1V1n2T2
n1T n2T n1T1P2 .
V2 = (1atm)(0.028L)(n2)(476K) .
(n1)(273K)(3.8atm)
V2 = L = 13 mL
Combined

7. IDEAL GAS LAW
A sample of iodine gas has a volume of 25 L, a temperature of 25oC and a pressure of 953 mmHg. How many grams of iodine are in the sample?

8. V = 25 L T = 25oC+273 = 298K P = 953 mmHg = 1.25 atm n= ? mol PV = nRT
n = PV RT
V = 25 L
T = 25oC+273 = 298K
P = 953 mmHg = 1.25 atm
n= ? mol
n = (1.25 atm) (25 L)
( )(298K)
n = 1.28 mol
n = 1.28 mol I g I2 = 330g I2
1 mol I2
L∙atm
K∙mol

9. IDEAL GAS LAW
25.0 g of methane (CH4) has a pressure of 4.44 atm at 250.oC. Find the volume occupied by the gas.

10. n = 25.0 g CH4 1 mol CH4 16.04 g CH4 n = 1.56 mol CH4 P = 4.44 atm
T = 250.oC +273 = 523K
V= ?
V = (1.56 mol)( )(523K)
4.44 atm
V = 15.1 L
PV = nRT
V = nRT P
L∙atm
K∙mol