Cyclohexane vapor at 180°C and 5 atm is cooled and condensed to liquid then solidified to solid at 6.5°C and 1 atm write the hypothetical process path to calculate the specific enthalpy change of this process step by step in the following blanks nothing that: 1-the condensation happens at 80.7°C and 1 atm 2- freezing happens at 6.5°C and 1 atm O 1. changing pressure at a constant temperature O 2. Changing the temperature at constant pressure O 3. Phase change at constant temperature and pressure O 4. the changing temperature at constant pressure O 5. phase change at constant temperature and pressure

1. Describe this diagram in terms of what information it gives you and how you can use this to determine a heat treatment for steel (10). 2. Describe a simple continuous cooling heat treatment to a) Bainite to pearlite 3. Describe the difference between the microstructure of bainite and tempered pearlite

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Insulated Sample Burning outside dish sample chamber Steel bomb Combustion (bomb) calorimeter. In an experiment, a 0.6629 g sample of phthalic acid ( C8H604) is burned completely in a bomb calorimeter. The calorimeter is surrounded by 1.046 x 10³ g of water. During the combustion the temperature increases from 24.04 to 26.63 °C. The heat capacity of water is 4.184 J-g¹. C-¹. The heat capacity of the calorimeter was determined in a previous experiment to be 788.9 J. ˚C-¹. Assuming that no energy is lost to the surroundings, calculate the molar heat of combustion of phthalic acid based on these data. C8 H6 O4(s) + (15/2) O2(g) → 3H₂O(l) + 8CO2 (g) + Energy kJ/mol Molar Heat of Combustion =

NEED IT UNTIL 5:15PM Estimate the convective heat-transfer coefficient for natural convection from a horizontalsteam pipe. The outside surface temperature of the insulated pipe is 80°C. Thesurrounding air temperature is 25°C. The outside diameter of the insulated pipe is 10 cm. please help me if my answer is wrong.

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(a) Why is a high energy release per unit mass an important consideration in selecting a fuel for vehicles involved in transport, particularly air transport? b) How well do your results agree with these values?. (c) Comment on the main sources of error in this experiment and suggest how the experimental design could be improve. 5.​(a) Graph the theoretical heats of combustion for each alcohol against the number of carbon atoms in each alcohol. b) Estimate a value for the heat of combustion of butanol. c) Use your data book to see how close your estimate for butanol is to the established value.

Water and mercury are mixed together in a well-insulated container. Use the values in the table below to answer the questions. Substance Mass, kg Ср J/kg-K Tinital, °C Hg 22 140 water 1.5 4,180 90 a. What is the final temperature in the vessel in ° C? b. What is AS for the water in J/K? c. What is AS for the mercury in J/K? d. What is the total AS for the process in J/K and what does that tell you?

The heat changes that take place in chemical reactions or physical state transitions can be measured. The heat change and the change in enthalpy is: Heat change does not affect enthalpy. O smaller than the change in enthalpy O equal to the change in enthalpy O greater than the change in enthalpy MacBook Air

8 i. Estimate the dimensions of a drying chamber for a spray dryer that has an output of 1000 kg/h of a heat-sensitive biological material at 60oC containing 5% moisture and having a mean particle size of 100 micrometers. The feed contains 40% solids by weight in an aqueous solution at 4oC. The inlet air has a humidity of 0.01 kg/kg dry air and is at 150oC, while the outlet air is at 80oC.