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QUESTION 1 5 points (Extra Credit) Save Answer Using the table below, which element is most...
Bonus Problem (worth 5 extra points.) You must show all your work to receive credit! 27. The initial carbon content...
Bonus Problem (worth 5 extra points.) You must show all your work to receive credit! 27. The initial carbon content (Co) of the sample is 0.2 wt %. You are using a carbon rich environment (hydro-carbon gas) to set the surface-carbon content (c) at 1.0 wt %. Using the Figure 5.11 (No need to use Error Function), calculate how long it would take at 1500 degree C to reach a carbon content of 0.4 wt % at a distance of...
Bonus Problem (worth 5 extra points.) You must show all your work to receive credit! 26. You are asked to improve t...
Bonus Problem (worth 5 extra points.) You must show all your work to receive credit! 26. You are asked to improve the hardness (and strength) of a steel sample by "carburization" process. The initial carbon content (co) of the sample is 0.2 wt %. You are using a carbon rich environment (hydro- carbon gas) to set the surface-carbon content (c) at 1.0 wt %. Using the Figure 5.11, calculate the required carburization temperature to reach a carbon content of 0.4...
QUESTION 18 1 points Save Answer Consider the Hall-Herault process for aluminum extraction. Aluminum ore Al203...
QUESTION 18 1 points Save Answer Consider the Hall-Herault process for aluminum extraction. Aluminum ore Al203 melts at 935°C and forms eutectic mixture of NaF and AlF3. Once aluminum is in the melt in ionic form (Al), electrolysis is performed, in the presence of oxygen, using carbon anode. Anode reacts during the electrolysis and has to be replaced. Calculate the standard cell voltage in V from thermodynamic data. (2A1203 + 3 ? ? 4 AI + 3 CO2). Express using...
Question 10 1 points Save Answer Which of the following indicators is most appropriate to use...
Question 10 1 points Save Answer Which of the following indicators is most appropriate to use in forcasting future economic activity? A. Laging economic indicators 3. Leading economie indicatos C. Coincident economic indicators D. All of the above E. None of the above
QUESTION 8 5 points Save Answer 1. endosymbiosis A. a branch point from which more than...
QUESTION 8 5 points Save Answer 1. endosymbiosis A. a branch point from which more than two descendant taxa emerged 2. family B. a group of genera sharing the most recent ancestor 3. gametophyte C. a small cell being taken into and living inside another cell 4. polytomy D. dominant generation of non-vascular plants 5. sporophyte E. dominant generation of vascular plants In your answer, match the numbers with letters.
Bonus Problem (worth 5 extra points.) You must show all your work to receive credit! 27. The initial carbon content (Co) of the sample is 0.2 wt %. You are using a carbon rich environment (hydro-carbon gas) to set the surface-carbon content (c) at 1.0 wt %. Using the Figure 5.11 (No need to use Error Function), calculate how long it would take at 1500 degree C to reach a carbon content of 0.4 wt % at a distance of...
Bonus Problem (worth 5 extra points.) You must show all your work to receive credit! 26. You are asked to improve the hardness (and strength) of a steel sample by "carburization" process. The initial carbon content (co) of the sample is 0.2 wt %. You are using a carbon rich environment (hydro- carbon gas) to set the surface-carbon content (c) at 1.0 wt %. Using the Figure 5.11, calculate the required carburization temperature to reach a carbon content of 0.4...
QUESTION 18 1 points Save Answer Consider the Hall-Herault process for aluminum extraction. Aluminum ore Al203 melts at 935°C and forms eutectic mixture of NaF and AlF3. Once aluminum is in the melt in ionic form (Al), electrolysis is performed, in the presence of oxygen, using carbon anode. Anode reacts during the electrolysis and has to be replaced. Calculate the standard cell voltage in V from thermodynamic data. (2A1203 + 3 ? ? 4 AI + 3 CO2). Express using...
Question 10 1 points Save Answer Which of the following indicators is most appropriate to use in forcasting future economic activity? A. Laging economic indicators 3. Leading economie indicatos C. Coincident economic indicators D. All of the above E. None of the above
QUESTION 8 5 points Save Answer 1. endosymbiosis A. a branch point from which more than two descendant taxa emerged 2. family B. a group of genera sharing the most recent ancestor 3. gametophyte C. a small cell being taken into and living inside another cell 4. polytomy D. dominant generation of non-vascular plants 5. sporophyte E. dominant generation of vascular plants In your answer, match the numbers with letters.
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