Calculate the internal energy (in Joules) of an endothermic system that absorbs 428.92 J and expands from 1.0 to 11.45 L against a pressure of 2.49 atm. Answer to one decimal space.
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- If you have 3 moles of a monoatomic ideal gas, how much heat is required to raise the temperature of this gas from 266.9K to 275.4K if the volume of the gas remains constant during the heating? Note: It is understood that your answer is in units of Joules, however do not explicitly include units in your answer. Enter only a number. If you do enter a unit ("J" in this case), you answer will be counted wrong.A system with a piston expands when it gives off 51.9J of heat to the surroundings. The piston is working against a pressure of .581 atm. The final volume is 58.6L and the initial volume was 65.1L. What is the change in internal energy?Suppose a tank contains 636 m³ of neon (Ne) at an absolute pressure of 1.01x105 Pa. The temperature is changed from 293.2 to 295.0 K. What is the increase in the internal energy of the neon? ΔU = i
- The volume of an automobile tire is 2.5 × 10−2m3 . the pressure of the air in the tire is 3 atm and the temperature is 37C ◦ . what is is the mass of air in grams ? The mean molecular mass of air is 29g. 1 atm = 1.01 × 105 Pa ; Calculate to 2 decimals.An electrical power station uses 1.33 1014 J of heat input with an efficiency of 34.7%. (a) How much work is done? (b) How much waste heat is produced by the station? (c) What is the ratio of waste heat to work output?i need part b answered, I got part a correct but i tried 100K and 900K for b and both were incorrect. i don't understand how to get the correct answer. I thought (300)(3/1)=900 would be the correct way to get the answer.
- An 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:kJConvert 7.13 ✕ 103 cal to the equivalent number of kilocalories (also known as Calories, used to describe the energy content of food), and joules. (a) kilocalories ?kcal (b) joules ?Jm = 0.593 kg of methanol in atmospheric pressure is heated with an electric heater from T₁ = 30.2 °C to its boiling point. After the heating my methanol is vaporized. Heating and vaporizing takes t = 450.41 s with n=0.59 heater's efficiency. What is the volume of methanol? V = What is the energy required for heating? E₁ = 1 kJ m³ Your last answer was interpreted as follows: 1 What is the energy required for vaporizing? Ev = 1 kJ Your last answer was interpreted as follows: 1 What is the power of the heater? P = 1 с Your last answer was interpreted as follows: 1 Your last answer was interpreted as follows: 1 What is the electr. energy needed for heating and vaporizing? Eε = 1 kJ Your last answer was interpreted as follows: 1 h Do not leave any fields blank. If you don't know the answer, insert 1 for example. Insert the answer with 3 significant digits without rounding the answer. Constant P Tb Value Unit 2.53 1165 786.3 64.7 °C umges Quantity heat capacity kg K kJ kW kg kg LAN Symbol h…
- In a refrigeration system, the refrigerant gas absorbs 21.39 kJ of energy while expanding against a0.278 atmosphere pressure from a volume of 0.0423 liters to a volume of 1.876 liters. What is the change in the internal energy of the gas? Note that 1 literxatmosphere is equal to .101.325 jouleThe equation for calculating the work performed when a piston in a cylinder expands against a constant pressure is w = −P ∙ΔV, where ΔV is the change in volume inside the cylinder. How much work is performed (in joules) when a piston pushes against a constant pressure of 1.21 atm, resulting in a volume change of 2.56 mL? (Hint: First determine the units that must be used for each term in the equation.)(101,325 Pa = 1 atm)An ideal gas at 20∘C consists of 2.2 x 1022 atoms. 8.5 J of thermal energy are removed from the gas. What is the new temperature in ∘C?