What is the carburizing time (in hours) necessary to achieve a carbon concentration of 0.5 wt% at a position 0.01 mm from the surface into the gear

t.                 w               e                 n                   t                 y                 c             h               a           r           a               c                 t             e             r             s        

scorpions are,

c.arachnids

  scorpions are animals in the order scorpiones, under the class arachnida, which makes them a distant cousin of spiders

happy to

pls mark as brainliest.