Biofuels have a higher solidification temperature. Briefly explain what this means.
Biofuels have a higher solidification temperature. Briefly explain what this means.
Briefly explain why, upon solidification, an alloy of eutectic composition forms a microstructure consisting of alternating layers of the two solid phases. What is this structure called? What kind of effect does this structure have on the melting point of the alloy and why? (5 points)
Briefly explain why, upon solidification, an alloy of eutectic composition forms a microstructure consisting of alternating layers of the two solid phases. What is this structure called? What kind of effect does this structure have on the melting point of the alloy and why? (5 points)
4. Briefly explain why, upon solidification, an alloy of eutectic composition forms a microstructure consisting of alternating layers of the two solid phases. What is this structure called? What kind of effect does this structure have on the melting point of the alloy and why? (5 points)
6. Briefly explain what the equation “qsolid = - qaq” means. 7. What is the symbol used to designate the reaction enthalpy?
briefly explain what entropy means to you ? you can use equations but you should explain the meaning of these equations
Briefly describe whether adiabatic flame temperature is higher when burring with or oxygen.
51. Explain what being a chemortoph and a phototroph means 52. List and briefly explain the types of biological work, give examples 53. Explain the first and the second laws of thermodynamics, give an example in biological systems 54. Show and explain how free energy of the system changes in an exergonic reaction 55. Explain why the system in equilibrium has the lowest free energy. Give an example. 56. Explain how thermal activation of chemical reactions work 57. Explain how...
Explain briefly what the power ratio means and why the delta dBs, when the delta dB is positive, zero, or negative, correspond to a power ratio that is greater than 1, equal to 1, or less than 1, respectively.
Which of the following polymers would you expect to have a higher glass transition temperature? Explain why and assume equal degrees of polymerization. a. -[CH2CH2NH]- b. -[CH2CH2O]-
Briefly explain how the micrometer works (i.e. what one full rotation of the rod means, the relationship between “horizontal” and “vertical” increments on the micrometer, and how the distances are converted to a voltage measurement.) What is the relationship between voltage and displacement, as examined in the LVDT experiment? Were the voltage readings within the linear range of the LVDT? After taking a few readings, was the voltage reading still zero when you returned to 0.500 inches on the micrometer?...