Zeisel method is used to estimate

When $0.15 \ g$ of an organic compound was analyzed using the Carius method for the estimation of bromine,$0.2397 \ g$ of $AgBr$ was obtained. The percentage of bromine in the organic compound is $.....$ (Nearest integer).
[Atomic mass: Silver $= 108$,Bromine $= 80$]

$0.259 \ g$ of an organic compound gives $0.350 \ g$ of $BaSO_4$ upon treatment. Calculate the percentage of sulphur in the compound. (Atomic masses: $Ba = 137, S = 32, O = 16$) (in $\%$)

While estimating the nitrogen present in an organic compound by Kjeldahl's method,the ammonia evolved from $0.25 \ g$ of the compound neutralized $2.5 \ mL$ of $2 \ M \ H_2SO_4$. The percentage of nitrogen present in the organic compound is $......$

In Carius method of estimation of halogens,$250 \ mg$ of an organic compound gave $141 \ mg$ of $AgBr$. The percentage of bromine in the compound is:

An organic compound is subjected to chlorination to get compound $A$. When $0.5 \ g$ of compound $A$ is reacted with $AgNO_3$ [Carius Method],it forms $0.3849 \ g$ of $AgCl$. Calculate the percentage of chlorine in compound $A$. (Round off to the nearest integer)
(Atomic masses of $Ag$ and $Cl$ are $107.87$ and $35.5$ respectively)