8. (a) Let 2.0 kg of liquid water at 100 °C be converted to steam at 100 °C by boiling at standard atmospheric pressure (which is 1.01 x 10° Pa). The volume of that water changes from an initial value of 1.00 x 10 m as a liquid to 1.80 m as steam. Calculate the change in the system's internal energy during the process. [Lv = 2256 kJ/kg]
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- 158 J of energy is transferred to a system consisting of 2.0 moles of an ideal gas. If the volume of this gas stays at a constant 2.8 L, calculate the change in internal energy of the gas.A block of gold with an initial volume of 1.04 x 104 m³ is heated at 9.3 atm so that its temperature increases from 25 °C to 55 °C. Determine the work done on the gold. [a gold: 14 x 106 °c'] [1 atm: 1.013 x 105 Pa] Select one: O -0.12 J O 0.041 J O 1.2e-6 J O -0.041 J10. A container with a movable piston holds 2.00 moles of a monatomic ideal gas at a pressure of 3.0 × 105 N/m2 in a volume of 0.018 m3 . (a) What is the temperature of the gas? (b) The gas undergoes an isothermal expansion to a volume of 0.027 m3 . How much work does the gas do during this expansion? (c) How much heat flows into or out of the gas during this expansion? Does it flow into or out of the gas?
- A solid cylindrical bar conducts heat at a rate of 25 W from a hot to a cold reservoir under steady state conditions. If both the length and the diameter of this bar are doubled, the rate at which it will conduct heat between these reservoirs will be O 12.5 W. O 200 W. O 100 W. O 25 W. O 50 W.A fixed amount of monotonic ideal gas starts at 6.0 m3 and 6.0 × 105 Pa and exactly 0 °C when it is expanded at constant pressure to 8.0 m3. ii) What was the change in internal energy of the gas for this expansion? a) – 4.0 MJ b) – 2.0 MJ c) 0.0 MJ d) + 2.0 MJ e) + 4.0 MJ64870 J of heat is added to a gas at a constant pressure of 1.75 x 105 Pa This causes a change in internal energy of 2570 J. If the starting volume is .864 m3, what is the final volume?