In a biomass pyrolysis process, $1002kg$ of wood chips containing $40\%$ moisture $($by weight$)$ is fed into sequential processes. Initially, all of the moisture content was removed in a dryer at $105C.$

In the second step, a reactor for pyrolysis is used. The pyrolysis reaction produces three main products: biochar, bio$-$oil, and off$-$gas. The composition of these products is as follows: Biochar: $20\%$ of the feedstock mass; Bio$-$oil: $32\%$ of the feedstock mass; Off gas: the remaining feedstock mass.

The one$-$third of the Biochar is used as fertilizer in agricultural applications. The remaining part is sent to a furnace for the graphitization process, which is conducted at $2000C$ for $24$ hours under an Argon atmosphere. It is known that the yield of the final process is $40\%.$

Using the information above,

a$)$ Draw a flowsheet with details denoting the amounts, streams, and units in accordance with their functions.

b$)$ Mass of moisture in the feedstock.

c$)$ Mass of dry wood chips fed into the Pyrolysis reactor.

d$)$ Mass of each pyrolysis product $($biochar$,$ bio$-$oil, and off$-$gas$)$ produced.

e$)$ Total mass of Pyrolysis products.

f$)$ Mass percentage of each product relative to the total mass of pyrolysis products

g$)$ Mass of finally obtained graphite.