Chemistry, 21.05.2020 19:00 westjayson69
BCC -iron with a concentration of carbon initially being 0.1 wt.% throughout is packed in carbon black and then placed in a furnace at 900°C. This effectively makes the concentration of carbon 100 wt.% at the surface. How much time will it take (in seconds) for the concentration of carbon to reach 5 wt.% at 1 mm from the surface of the steel? The diffusion coefficient for carbon in BCC -iron at 900°C is 1.4 x 10-10 m²/s
Answers: 2
Chemistry, 22.06.2019 00:30
Lem 2 the data below are for the system ethyl propyl ether (1)-chloroform (2) at 0.5 bar. use the data to answer the following questions (all questions refer to p d 0: 5 bar). a) what are the boiling points of the pure components at 0.5 bar? b) a mixture with the overall composition z1 d 0: 1 is brought to 47.6ä±c, 0.5 bar. what is the phase? c) 100 mole of a mixture with z1 d 0: 1 (state a) is mixed with 22 mole of pure ethyl propyl ether vapor (state b). the mixing takes place at 47.6 ä±c, 0.5. bar. what is the phase of the resulting mixture (state c)? if the state is a v/l mixture report the number of moles and mole fractions in each phase. d) plot the txy graph and show states a, b and c. the graph must be done by computer and should be properly annotated. ethyl propyl ether (1) - chloroform (2) at 0.5 bar t ( ä±c) x1 y1 t ( ä±c) x1 y1 42.9 0.000 0.000 49.0 0.470 0.455 43.0 0.020 0.010 49.1 0.520 0.520 43.9 0.065 0.029 48.9 0.567 0.592 45.4 0.156 0.089 48.3 0.652 0.720 46.4 0.215 0.142 47.6 0.745 0.815 47.6 0.296 0.223 46.7 0.822 0.872 48.3 0.362 0.302 45.7 0.907 0.937 48.7 0.410 0.375 44.6 1.000
Answers: 3
Chemistry, 22.06.2019 20:00
How are the terms group and period used on the periodic table
Answers: 1
Chemistry, 23.06.2019 00:50
What is the enthalpy of combustion (per mole) of c4h10 (g)? –2,657.5 kj/mol –5315.0 kj/mol –509.7 kj/mol –254.8 kj/mol
Answers: 1
BCC -iron with a concentration of carbon initially being 0.1 wt.% throughout is packed in carbon bl...
Mathematics, 01.12.2020 23:10
History, 01.12.2020 23:10
SAT, 01.12.2020 23:10
Mathematics, 01.12.2020 23:10
Computers and Technology, 01.12.2020 23:10
Mathematics, 01.12.2020 23:10
Mathematics, 01.12.2020 23:10
History, 01.12.2020 23:10
Mathematics, 01.12.2020 23:10
Mathematics, 01.12.2020 23:10
Mathematics, 01.12.2020 23:10
Mathematics, 01.12.2020 23:10