A thermally isolated system consists of 1 mol of helium gas at 100 K and 1 kg of a solid (c = 24.9 J/kg K) at 200 K. The gas and the solid are separated by an insulating wall of negligible mass. If the wall is removed, what is the equilibrium temperature of the system? 1 mol He 1 kg solid
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- A gas thermometer of constant volume is filled to a pressure P3 in equilibrium with the triple point of water. Then it is placed in thermal equilibrium with a system of unknown temperature at a pressure P. This is repeated five times, the data obtained are: P3 P 500 882 400 707.4 300 527.4 200 351.0 What is the temperature of the idea gas of the system? Remember: T3=273.16 100 175.2An ideal gas is held in a non-rigid container that is kept at a constant temperature (295 K). The pressure on the container is reduced from 50 Pa to 30 Pa. If the initial volume of the gas was 0.75 m3, what is the final volume? Hint: This is the ideal gas law but pay attention to the initial and final valuesOxygen with mass of m1=6 g and temperature T1=300 K is in a container under pressure p1= 9.66·105 Pa. If an unknown gas with mass m2= 3 g and temperature T2=330 K is placed in the same container, then the gas is under pressure p2=9·105 Pa. Find the molar mass of the unknown gas.
- How much heat is required to increase the temperature of 2.30 moles of an ideal monatomic gas by 14.0 K at constant pressure? (R = 8.31 J/mol - K) O812 J O 333 J O 669 J O 285 J O 395 JQuestion 11 After some time, you pour 0.5 kg of milk, whose initial temperature was 5°C. What will be the final equilibrium temperature of this system? Let: 1.5 kg of coffee, originally at 90°C, is placed into a .3 kg aluminum cup. J Ccoffee = 4186 kg K J CAI = 500 kg K J CMilk = 3000 kg K Question 12 A solid steel sphere of radius 50 acts as a perfect radiator, calculate the amount of heat it will radiate after 1 min. cm is heated to 3000 K. If the sphereA cylinder of gas has a lightweight piston on top that is free to move with no friction. The gas temperature is changed from initial 87°C to 36°C. What is the final-to-initial volume ratio V4/V? O 041 O 1.17 O242 0986
- The initial temperature of three moles of oxygen gas is 33.5°C, and its pressure is 7.80 atm. (a) What will its final temperature be when heated at constant volume so the pressure is two times its initial value? °C (b) Now the volume of the gas is also allowed to change. Determine the final temperature if the gas is heated until the pressure and the volume are doubled. °CA 1.8-L cubic container contains 0.46 mol of a certain gas at 26 °C. What is the net force due to the nitrogen on one wall of the container? I'm trying to use P=nRT/V but I can't get units to work outAn ideal gas is heated at a constant pressure of 1.80 x 10 Pa from a temperature of -73.0°C to a temperature of +27.0°C. The initial volume of the gas is 0.100 m³. The heat energy supplied to the gas in this process is 40.0 kJ. What is the increase in internal energy of the gas? -8.95:kJ
- (a) A tank contains one mole of helium gas at a pressure of 6.35 atm and a temperature of 22.0°C. The tank (which has a fixed volume) is heated until the pressure inside triples. What is the final temperature of the gas? °C (b) A cylinder with a moveable piston contains one mole of helium, again at a pressure of 6.35 atm and a temperature of 22.0°C. Now, the cylinder is heated so that both the pressure inside and the volume of the cylinder double. What is the final temperature of the gas? °CA spherical balloon of volume 4.07 x 10³ cm³ contains helium at a pressure of 1.21 x 105 Pa. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 x 10-2² J? molA cube of ice is taken from the freezer at -8.8°C and placed in a 104 g iron cup filled with 279 g of water. Both the water & the cup are at 23.9°C. Eventually the system reaches thermal equilibrium at 12.4°C. Determine Qcup, Qwater (for the water initially in the cup), Qice, & the mass of the ice.Qcup = Qwater = Qice = mice =