Question

Combined Gas Law Name Directions: Calculate the following using the Combined Gas Law, 1. A gas initially at 23.0 L at 40.0 C under 2.00am has pressure changed to 12.0 atm and temp changed to 400,"C. What is the new volume? 2. If a sample of gas is 17.0 L with a pressure of 2.50 atm at 20.0'C is cooled to 0 °C and pressure drops to 30 atm, what volume would it be? Lettttttt 3. A gas has a volume of 250 L at 45.0 °C but pressure is unknown. If the volume changes to 34.0 L and temp changes to 35.0"C and the new pressure is 1.50 atm, what was original pressure? 4. If a gas is at 15.0" with a volume is 50 L with pressure of 2.8 at the temp is raised to 30.0°C and the volume is reduced to 4,0 L what is new pressure? 5. 13.0 L of gas at 22.0'C with a pressure of 95 atm is compressed to a 5.0L tank with a pressure of 4.5 atm, what is new temp? 6. An unknown volume of gas at a pressure of 0.55 atm and a temperature of 425 K. If I raise the pressure to 2.2 atm, decrease the temperature to 310 K, and measure the final volume to be 47.0 L. what was the initial volume of the gas? 7. If I have 250 L of gas held at a pressure of 88.0 atm and a temperature of 300.C, what will be the volume of the gas if I decrease the pressure to 35.0 atm and decrease the temperature to 50.0 °C? 105

Answer 1

age The combined gs law is as tollotos whene, Pntial pnessuwe volume absolute temperatune pnessure volume cbsolute temperatue 12.0 atm P = 2.00 alm 1 V 23.0 L T 40.0°C T2= 400 °C C40.0 +273) K C400+273) K 313 K = 673 K 2,00 abh x 23.0 L x 673 RViTz 12.0 amx 313K 8.24 L

2. P 2.50 atu naye-2 B 0.30 atu V 17.0 L T 20.0°C T0°C - 293 K =273 K RVT 2 2.50 x 7.0 X 273 L 131.99 L 0.30 x 293 132 L 3. P? = 1.50 atu Vi 25.0 L -34.0 L T=45.0°C 35.0 C = 30S K 150 x 34,0x 318 atm 25.0 x 308 2. atm 4. 2.8 atm Vi5.0 L =.0 L T15.0 T30,0 - 303 K = 288 K 2.8x5.0x 303 atm 3.7 atm 4.0 x 288 T

5. P 4.5 atm = 0.45 alm Cpaye 3 V13.0 L 50 L TM22.0 295 K 4.5メ5.0 × 295 537.45 K 0.95 x 13.0 (537.45-273) 'c 264.45 C 264C 6. P 0.55 atu 2.2 ati 2=47.0L T425 K T310 K 2.2x 47,0 x 425 257.74 L 0,55x 310 RT 258 L 7.P88.0 atu B=35.0 atu V 25.0 L TT 323K =300° T50C -513K RVIT 88.0 x25.0 x323 L 35.4 L 35.0 x 573