Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6*10-11 m^2/s and the diffusion flux is found to be 1.2*10-7 kg/(m^2*s). also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m^3. how far into the sheet from this high-pressure side will the concentration be 2kg/m^3? assume a linear concentration profile.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

is it d? cause im still confusion

  the moles   of   sulfuric acid   that are needed to react   completely with 6.4   moles   of lithium hydroxide   is 12.8   moles ( answer a)

calculation

step 1 : write a balanced   chemical equation

2lioh   + h₂so₄   →   li₂so₄   +2h₂o

step 2 : use the mole ratio   to determine   the   moles h₂so₄

from   equation above   lioh: h₂so₄   is 2: 1 therefore   the moles of h₂so₄

= 6.4   x 2/1   = 12.8   moles   of h₂so₄