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- A certain heat engine does 10.0 kJ of work and 8.00 kJ heat transfer occurs to the environment in a cyclical process. a. What was the heat transfer (in kJ) into this engine? b. What was the engine's efficiency (in percent)?A heat engine produces 2000 J of work while operating between 210 degrees Celsius and 35 degrees Celsius. a. How much heat (in J; 3 significant figures in scientific notation) is withdrawn from the hot source to produce this much of work? (Format of final answer should be 1.00x10^2) b. Calculate the efficiency of the engine (in percent). c. The root mean square speed of methane is 846 m/s. What is the temperature of the gas (in degrees Celsius)?1st Law of Thermodynamics - Cyclic Process 1 In the figure, pressure PA=PB = 4.80 X 105 Pa. pressure P= P =1.6X 10° Pa. Volume VA = VD= 0.0016 m², V = 0.0064 m³ Don't use scientific notations in your answers. Calculate the work done from A to B. Include a proper sign. Keep 2 decimal places. Enter a number J Submit Calculate the heat from A to B. Include a proper sign. Keep 2 decimal places. Enter a number J Submit Pressure Calculate the change in internal energy from A to B. Include a proper sign. Keep 2 decimal places. Enter a number J Submit D m³ 3 B isotherm From B to C is an isothermal (constant temperature) process. Caculate the volume at point C. Keep 5 decimal places. Enter a number Submit C Volume
- A certain heat engine operates on the PV diagram below. It contains 3.21mol of a monatomic ideal gas. p (Pa × 105) 2.0 a b 0.010 C ➤ V(m³) O 0.040 a. What temperature is the gas at state c? b. What temperature is the gas at state a? c. How much heat is added/removed from the gas over the path c-to-a? d. What is the pressure of state a? e. What is the temperature of state b? f. Find the work and heat for path a-to-b. g. Find the work and heat of path b-to-c. h. Find the efficiency of the engine. i. Would the engine be more, or less efficient if the gas were diatomic?1. The formula for work in thermodynamics is given by PV = W. Suppose that at any pressure, P = h(V + V,") where V is the volume and V, is the initial volume. h and V, are constants. If work is to be maximized, what is the correct expression of maximum work in terms of constants? A. -1/2V. B. -h/2V. C. A(V, + 1)/4V, D. -h/4 E. None of these. A B.QUESTION 16 The temperature at state A is 20.0°C, that is 293 K. During the last test, you have found the temperature at state D is 73.0 K and n = 164 moles for this monatomic ideal gas. What is the change in thermal energy for process A to D, in MJ (MegaJoules)? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. p (atm) 5 4 3 2 1 0 A D 1 2 3 4 B 5 → V (m³)
- 7. Write the formula for the computation of work if it is isobaric. 8. If the gas (system) is expanding, is the work positive or negative? 9. If heat is absorbed by the system, is q positive? 10. What is the conversion factor between Latm and joule?3. 0.5 moles of cinnamaldehyde gas that has an initial volume of ten liters expands under the following conditions: 185°F and 800mmHg external pressure. a. How much work is done? Express your answer in Latm. b. Assuming that the container is cylindrical with a base radius of 10cm and can only expand vertically, how much kinetic energy does a single molecule possesses if it travels from base to base of the expanded cylinder in 10us? Express your answer in J.An electrical power station requires 1.05 × 1014 J of heat transfer into the engine and has an efficiency of 42 %. a.) How much heat transfer occurs to the environment by the electical power station in J? b.) What is the ratio of heat transfer to the environment to work output? c.) How much work is done in J?
- The specific heat of liquid water is 4190 J/kg. K. ▼ Part A What is the molar specific heat of liquid water in J/mol. K? Give your answer as a multiple of R, rounded to the nearest half integer. Express your answer as a multiple of R to the nearest half integer. Cmol = 9 R Submit Correct Part B Previous Answers Equal moles of liquid water and helium gas are heated at constant pressure from the same initial temperature to the same final temperature. By what factor is the entropy increase of the water larger than the entropy increase of the helium? Express your answer to two significant figures. AS water ASHe Submit 17| ΑΣΦ Request Answer ?The given P-V diagram relates to a fixed quantity of CO2, assumed to be an ideal gas. The temperature at point A is 35 degrees celsius. 1. What is the total mass of CO2? 2. What is the temperature at point C in degrees celsius 3. What ist he heat added to the gas over the ABCA cycle 4. 3200 J of heat flows out of the system when the system is taken ont he straight path from C and A. What is the change in internal energy along that path?IP A gas has a temperature of 310 K and a pressure of 105 kPa Part A Find the volume occupied by 1.50 mol of this gas, assuming it is ideal. Express your answer using three significant figures. Vgas 3.68x102 m² Submi Part B Correct Correct answer is shown. Your answer 0.037 m² was either rounded differently or used a different number of significant figures than required for this part. Important: If you use this answer in later parts, use the full unrounded value in your calculations. Previous Answers Verdan Assuming the gas molecules can be approximated as small spheres of diameter 2.5x10-10 m, determine the fraction of the volume found in part A that is occupied by the molecules. Express your answer using two significant figures. Submit Review ΥΠ' ΑΣΦΑ Previous Answers Request Answer