The concentration of hydrogen atoms inside a vessel is kept at 1020 atoms/cm3. The vessel has a palladium foil of area 2

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The concentration of hydrogen atoms inside a vessel is kept at1020 atoms/cm3. The vessel has a palladiumfoil of area 2 cm2 and the thickness of the foil is 1micrometer. If the diffusion coefficient of hydrogen in palladiumis 10-6 cm2/sec, the hydrogen atomconcentration outside the foil is maintained at zero.
1. Flux of atoms follows
a. Fick's first law b. Fick'ssecond law c. Massaction
2.Concentration gradient of the hydrogen across the palladiumfoil is
a. 1019 atoms/cm2 b. -1024 atoms/cm4 c. -1023 atoms/cm4
3. Flux of atoms across the palladium foilis
a. 1018 atoms/cm2.sec into thevessel
b. 1018 atoms/cm2 .sec out of thevessel
c. 1018 atoms/cm2 out of the vessel
4.
Rate of supply of atoms outside the vessel is
a. 1018 atoms/sec b.2x1018 atoms/sec
c. 2x1018 atoms/cm2.sec