Chemistry, 30.03.2020 15:58 katiebreon6193
Nitrogen from a gaseous phase is to be diffused into pure iron at 700°C. If the surface concentration is maintained at 0.1 wt% N, what will be the concentration 1 mm from the surface after 25h? The diffusion coefficient for nitrogen in iron at 700°C is 2.5 x 10-11 m2 /s.
Answers: 3
Chemistry, 22.06.2019 00:30
Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1
Answers: 3
Chemistry, 22.06.2019 13:30
Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?
Answers: 3
Chemistry, 22.06.2019 19:40
What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles
Answers: 2
Chemistry, 22.06.2019 21:30
Describe at least two advantages and two disadvantages of using hydropower as a source of energy.
Answers: 2
Nitrogen from a gaseous phase is to be diffused into pure iron at 700°C. If the surface concentratio...
History, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Social Studies, 14.02.2022 04:20
Social Studies, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
English, 14.02.2022 04:20
Mathematics, 14.02.2022 04:20
Computers and Technology, 14.02.2022 04:20