4. A substance is heated from 15 C to 35°C a. What is the incremental change...
15. If 5.0 mol of the substance was heated in this experiment, what is the approximate value of the molar heat capacity (Cm) for the liquid phase of this substance? A. B. C. D. E. 5.3 J.mol-1.K-1 38 J.mol-1.K-1 160 J.mol-1.K? 190 J.mol-1.K-1 270 J.mol-1-K-1 Shown below is a heating curve generated during an experiment in which 5.0 mo of a substance was heated to around 190°C. 200.0- 160.0 -- 120.0- T(°C) 80.0 - -- 40.0- - 0.00– --- 0.00...
Calculate the enthalpy change associated with the following process: a) m-cresol is heated from 25°C to 100°C b) Ethylene glycol is cooled from 15° to 120°C c) Succinic acid is heated from 15°C to 65°C d) Air is cooled from 15°C to 65°C
What is the change in internal energy (E) when system is heated with 35 J of energy while it does 15J work
4. The air in a 100 m3 balloon is electrically heated from 10 C to 35 C in 12 minutes. Assuming that the balloon is well insulated, and atmospheric pressure is 100 kPa, how much electrical power will the resistance heater need to dissipate to heat up the balloon?
In a variable volume container, 35 kg of water is heated from 75 °C to 250 °C at a constant pressure of 5 bar. a. [4 pts] How much heat was added to the container? b. [8 pts] If the same amount of heat is instead added to 35 kg of water at 75 °C in a rigid container at a constant pressure of 5 bar, what would be the final temperature?
E4B.2(a) Water is heated from 25 °C to 35°C. By how much does its chemi- cal potential change? The standard molar entropy of liquid water at 298 K is 69.9JK'mol"!.
Q7 A 215-g sample of a substance is heated to 330°C and then plunged into a 105-g aluminum calorimeter cup containing 185 g of water and a 17-g glass thermometer at 10.5°C The final temperature is 35.0°C. What is the specific heat of the substance? Assume no water boils away.) Q8 () A child rolls a ball on a level floor 3.5 m to another child. If the ball makes 12.0 revolutions, what is its diameter? (ii)A grinding wheel 0.35...
A 125 g sample of an unknown substance is heated to 93.6 °C and then dropped into 100.0 g of water at 19.0°C in a calorimeter. The temperature of the water rises to 31.0°C. What is the specific heat of the substance? Assume no heat lost to the surroundings. The specific heat of water is 4.184 J/ (g•°C).
1. The endothermic (i.e. AH is positive) reaction 3A+B = C is heated from 35°C to 65°C. Determine in which direction the reaction will proceed to reach equilibrium.
1. Absolute 0 is a. -459°F. c. -32°C. e. both a and d. b. 0°F. d. OK f. None of the above. 2. Convert 4 K to °C. 3. Convert 21 °C to "F. 4. Convert 32°F to Kelvins. 5. The different mechanisms for heat transfer are: Be sure to add a little description for each for study purposes. 6. Temperature is a measure of what type of energy of the individual molecules of a substance? 7. True of False....