According to Figure 3, at Sites 1, 2, and 3, the smallest 8180 value of the groundwater in the lake clay was recorded at a depth between:
see Figure 1).
rapped in lake
Ements were
ill) and bedrock
of the top 40 m
of 2 oxygen
werage
O O m and 10 m.
O 10 m and 20 m.
O 20 m and 30 m.
O 30 m and 40 m.

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.

yes it is balanced

u i forgot the answer?

the answer would be a