If the density of CuO in ore ρ = 0.06It is leached with H2SO4 = 0.5MOre particle have radius r=0.7Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching.

If the density of CuO in ore ρ = 0.06It is leached with H2SO4 = 0.5M

1.	If the density of CuO in ore ρ = 0.06It is leached with H2SO4 = 0.5MOre particle have radius r=0.7Effective diffusivity De= 6*10-6Molecular weight Mb=79.6 B=0.5Cab=0.01Calculate the time required for total leaching.
A.	10.2h
B.	10.42h
C.	10.54h
D.	6.4h
Answer» C. 10.54h

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