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- One way to cool a gas is to let it expand. When a certain gas under a pressure of 5.00 106 Ha at 25.0C is allowed to expand to 3.00 times its original volume, its final pressure is 1.07 106 Pa. (a) What is the initial temperature of the gas in Kelvin? (b) What is the final temperature of the system? (See Section 10.4.)The specific heat of substance A is greater than that of substance B. Both A and B are at the same initial temperature when equal amounts of energy are added to them. Assuming no melting or vaporization occurs, which of the following can be concluded about the final temperature TA of substance A and the final temperature TB of substance B? (a) TA TB (b) TA TB (c) TA = TB (d) More information is needed.Sixty grams of water are at an initial temperature of 26 °C. Calculate the heat required to completely convert the liquid water to steam at 100°C. (Latent heat of vaporization of water Ly = 540 cal/g Specific heat of water c = 1 cal/g °C) O 3.2 x101 cal. O 4.44 x103 cal. O 3.68 x104 cal. O 6.00 x103 cal.
- What is the specific heat c of a 0.500 kg metal sample that rises 4.80 °C when 305 J of heat is added to it? O 127 J/kg.K O 108 J/kg.K O 116 J/kg.K O 101 J/kg.K O 171 J/kg.KA 0.150-kg sample of a metal alloy is heated at 540 Celsius an then plunged into a 0.400-kg of water at 10.0 Celsius, which is contained in a 0.200-kg aluminum calorimeter cup. The final temperature of the system is 30.5 Celsius. What is the specific heat of the metal alloy in J/Kg.Celsius? O 497 O 74.60 50.00 O 3316 994The R value of fiberglass batting, 3.5 inches thick, is 11 ft2x°Fxh/BTU. What is the thermal conductivity (in BTU/ftx°Fxs)? 7.4' 10-6 2.7' 10-² 8.9 10-5 1.410-4 3.6 10-3
- In an experiment, a 125-g sample of an unknown metal is heated to 98.0°C. The metal is then placed into a 25.0-g aluminum calorimeter cup (with c = 900 J/kg.°C) containing 200-g of water at 20.0°C. When equilibrium is reached, the final temperature is 28.2°C. What is the specific heat of the unknown metal? %3D 637.2 J/kg-°C 673.7 J/kg.°C 679.9 J/kg.°C 788.5 J/kg.°C А. D. В. 808.0 J/kg.°C Е. С. 775.2 J/kg.°C F.What is the rate of heat flow through a pane of glass that is 25.0 cm by 100.0 cm with a thickness of 5.00 mm when the outside temperature is - 15.0°C and the inside temperature is 25.0°C? The thermal conductivity of glass is 0.105 W/(m K) and the specific heat of glass is 0.180 cal/(g: °C) O 210 W O 21 W O 2100 W O 360 W O 3600 WA 0.521 g sample of steam at 106.6 °C is condensed into a container with 5.35 g of water at 17.0 °C. What is the final temperature of the water mixture if no heat is lost? The specific heat of water is 4.18 , the specific heat of steam is 2.01 , J g. C and AHvap = 40.7 kJ/mol. %3D g. "C Tf = 17.3 °C
- A 0.593 g sample of steam at 105.9 °C is condensed into a container with 5.52 g of water at 14.6 °C. What is the final temperature of the water mixture if no heat is lost? The specific heat of water is 4.180 the specific heat of steam is 2.01and AHvap = 40.7 kJ/mol. & C T₁ = °℃Possibly useful information: The specific heat of (liquid) water is cw = 4186 J/(kg C° ). The heat of fusion for ice or water is L = 3.33 x 105 J/kg The latent heat of vaporization for water is 22.57 x 105 J/kg 1 calorie = 4.186 Joules T (Kelvin) = T (Celsius) + 273 1. A0.040 kg ice cube at 0 Celcius is placed in an insulated box that contains 0.007kg of steam at 100 Celsius. What is the equilibrium temperature reached by the closed system. NOTE: All of the ice melts.a) What is the specific heat capacity of water?_________________________b) Calculate the thermal energy (Q) transferred to a litre of water when you are using a domestickettle to boil the water, given the following equation:? = ??∆?Equation 1and assuming the following: Initial Temperature, Ti = 20 °C, Final temperature, Tf = 100 °C, 1 litre of water ≈ 1kg of water.Show all your calculations.____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________c) Comment on the assumptions and approximations that you have made.