Hess's Law of Constant Heat Summation

Consider the following data

$\mathrm{A}{\left(\mathrm{OH}\right)}_3+4\mathrm{HCl}\to {\mathrm{HACl}}_4+3{\mathrm{H}}_2\mathrm{O}$              $∆\mathrm{H}°=-\mathrm{xkJ}$

$\mathrm{A}{\left(\mathrm{OH}\right)}_3+4\mathrm{HBr}\to {\mathrm{HABr}}_4+3{\mathrm{H}}_2\mathrm{O}$             $∆\mathrm{H}°=-\mathrm{ykJ}$

$\mathrm{A}{\left(\mathrm{OH}\right)}_3+4\mathrm{HI}\to {\mathrm{HAl}}_4+3{\mathrm{H}}_2\mathrm{O}$                   $∆\mathrm{H}°=-\mathrm{zkJ}$

($\mathrm{x},\mathrm{y}$ and $\mathrm{z}$ are positive number)

Experiment I: $0.4 \mathrm{kJ}$ is absorbed when one $\mathrm{mol}$ of ${\mathrm{HABr}}_4$ was mixed with $4 \mathrm{mol}$ of $\mathrm{HCl}$ and $\%$ conversion of ${\mathrm{HABr}}_4$ into ${\mathrm{HACl}}_4$ is $5\%$ (Hypothetical)

Experiment II: $0.8 \mathrm{kJ}$ is released when one $\mathrm{mol}$ of ${\mathrm{HABr}}_4$ was mixed with $4 \mathrm{mol}$ of $\mathrm{HI}$ and $\%$ conversion of ${\mathrm{HABr}}_4$ into ${\mathrm{HAI}}_4$ is $8\%$.

If one $\mathrm{mol}$ of ${\mathrm{HAl}}_4$ is mixed with $4 \mathrm{mol}$ of $\mathrm{HCl}$ and conversion of ${\mathrm{HAl}}_4$ into ${\mathrm{HACl}}_4$ is $10\%$ then in this process

Given that

$\mathrm{A}\left(\mathrm{s}\right)⟶\mathrm{A}\left(\mathrm{l}\right) \Delta \mathrm{H}=\mathrm{x}$

$\mathrm{A}\left(\mathrm{I}\right)⟶\mathrm{A}\left(\mathrm{g}\right) \Delta \mathrm{H}=\mathrm{y}$

The heat of sublimation of $\mathrm{A}$ will be

$∆{\mathrm{H}}_{\mathrm{i}}°$ of water is $-285.8 \mathrm{kJ}{ \mathrm{mol}}^{-1}$. If enthalpy of neutralization of strong monoacid with strong mono base is $-57.3 \mathrm{kJ}{ \mathrm{mol}}^{-1},\Delta {\mathrm{H}}_{\mathrm{f}}°$ of ${\mathrm{OH}}^{-}$ ion will be

1 mol of hydrocarbon P (contains C and H only) required 240 g of oxygen (O₂) for complete combustion at standard state. If at standard state heat of combustion of $\mathrm{P}\left(\mathcal{l}\right)$ is –3350 kJ/mol while heat of formation of CO₂ (g), ${\mathrm{H}}_2\mathrm{O}\left(\mathcal{l}\right)$ and $\mathrm{P}\left(\mathcal{l}\right)$ are –400 kJ/mol, –300 kJ/mol and 50 kJ/mol. The molar mass of P is (in g/mol)