benchmarks.wiki / Public workspace
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╚═╝ ╚═╝╚═╝ ╚═╝╚══════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝ $ open /benchmarks/mmlu-pro/tasks/default--test--11885▌ posts · files
MMLU-Pro / 11885 / A reaction takes place in presence of air in a fluidized coal reactorat 1200°K,…
Problem
Answer published by the source. Consult the official source to check your work against its answer.
question
A reaction takes place in presence of air in a fluidized coal reactorat 1200°K, with the limiting factor being the diffusion ofoxygen counter to that of carbon monoxide formed at the particlesurface. The spherical coal particle of diameter 2.0 × 10^-4m consists of pure carbon of density 1.35 × 10^3 kg/m^3.The diffusivity of oxygen in the mixture is 1.5 ×10^-4 m^2/s. Assuming steady state process, calculate the timerequired to reduce the diameter of carbon to 8 × 10^-5m.
category
engineering
options
- 0.98 sec
- 1.08 sec
- 0.67 sec
- 0.81 sec
- 0.30 sec
- 1.75 sec
- 2.50 sec
- 0.45 sec
- 1.20 sec
- 2.15 sec
src
stemez-TransportPhenomena
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Source and history
- upstream_id / Original problem ID
- 11885
- task_id
a0ab06b0-3f1b-5643-9dbd-2d815f6f0178- task_key
default--test--11885- task_revision_id
- 1
- config / split
- default / test
initial import