Ashipment of shark meat was destroyed after it was found to contain 1.76 ppm methyl mercury which is higher than the legal limit of 1.00 ppm

a. if the shark meat had a mass of 12.5 kg what mass of methyl mercury was percent in the shark meat

b. what is the maximum number of grams of methyl mercury the shark meat could contain and still be considered safe to consume according to the legal limit

A. The Amount of Methyl Mercury in Shark Meet:

ppm

Amount of Mercury:

B. Allowed Mass of Methyl Mercury in Shark Meet

Allowed Amount:

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.