26. You have to apply the equation
P1V1 / T1 = P2V2 / T2, p is pressure , t is temperature, V is volume, 1 and 2 refers to an initial and final state, since the temperature remains constant this equation is
P1* V1 = P2 * V2
850 * 6.414 = 4423 * V2
V2 = 850 * 6.414 / 4423 = 1.23 Liters
27.
Reverse the equation 1)
2 H2O + N2 ==== N2H4 + O2 H = 622 KJ, change the sign when you reverse an equation
multiply equation 2 by 2
2 H2 + O2 ===== 2H2O, -285.9 * 2 = -571.8 KJ
Add the equations
2 H2 + O2 ===== 2H2O
2 H2O + N2 ==== N2H4 + O2
-----------------------------------------------
2H2 + N2 ======== N2H4 , our equations are right so just add the values we got
-571.8 + 622 = 50.2 KJ
Remember that if you reverse an equation you must change the sign from positive to negative or negative to positive
If you multiply an equation you have to multiply the value of the enthalpy
If you like this answer please dont forget to rate it =)
sample of a gas in a cylindrical chamber with a movable piston occupied a volume of...
26. A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 6.414 liters when the pressure was 850 torr and the temperature was 272 C. The pressure was readjusted to 4423 torr by moving the piston. What was the volume occupied by the sample under the new conditions if the temperature remained constant throughout? PVI PV
A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 1.40 liters when the pressure was 768 torr and the temperature was 26.9 C. The volume of the system was readjusted to 2.16 liters by changing the temperature while the load on the piston was kept constant to keep the pressure in the system constant. What was the new? Assume ideality A gas sample containing 0.2820 moles of a compound is trapped in...
17. A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 1.40 liters when the pressure was 762 torr and the temperature was 26.9°C. The volume of the system was readjusted to 0.150 liters by moving the piston. What was the pressure exerted on the surface of the piston by the gas if the temperature of the system remained constant? a. 13.4 atm b. 883 atm c. 918 atm d. 1020 atm e....
A sample of gas is put into a container with a movable piston that will allow pressure to be maintained. If the sample of gas was initially at 19.8 degrees Celcius and occupied a volume of 7.00 L, what temperature would the sample be if the piston changed the volume to 74.3 L?
A gas is confined to a cylindrical volume with a movable piston on one end. Initially, the volume of the container is 0.200 m3, and the gas is at 310 K. The gas is heated, but the piston is moved such that the temperature of the gas remains constant. (a) If there are 2.40 mol of gas in the container, write an equation for the pressure of the gas as a function of the volume of the container. (Assume SI...
A gas is confined to a cylindrical volume with a movable piston on one end. Initially, the volume of the container is 0.200 m3, and the gas is at 315 K. The gas is heated, but the piston is moved such that the temperature of the gas remains constant. (a) If there are 2.40 mol of gas in the container, write an equation for the pressure of the gas as a function of the volume of the container. (Assume SI...
. An NIU student is playing around with a movable piston that can compress the gas inside a cylindrical chamber. He decides to compress the gas to 1/10th its initial volume to a pressure that is 30 times its initial pressure. If the initial volume was 0.055 m3 and the initial temperature of the gas was 25 °C, what will be the final temperature of the gas? 6 5 Bb Content D aws4_request&.X-Amz-Sign NIU Dennis Brown - NIU - Cours...
Hey need help with this qs. Thanks Question 9 The volume of a cylindrical chamber is controlled by a movable piston. A sample of gas is placed in the chamber, and the volume is allowed to change from 0.0100 m to 0.100 m at a constant temperature. Part A If the entropy of the system increases by 7.51 x 18 during the volume change, how many gas particles are there in the chamber? particles Submit My Answers Give Up Provide...
8) Base your answer on the information below. A rigid cylinder is fitted with a movable piston. The cylinder contains a sample of helium gas, He(g), which has an initial volume of 125.0 milliliters and an initial pressure of 1.0 atmosphere, as shown below. The temperature of the helium gas sample is 20.0°C. Handle 0 2.0 Movable piston L3.04 Pressure gauge -1500 mL 125.0 ML -100.0 mL -75.0 mL -50.0 mL -25.0 mL ATM Rigid cylinder Helium gas is removed...
What is the volume occupied by a 28.0 g sample of nitrogen (N2) gas at 298 K and 1 bar pressure?