Coretta wants to create a system of equations so that the system has only one solution. Which of these can Coretta do? Check all that apply. Create a pair of equivalent equations.
Create a pair of lines in which one line lies directly on top of the other.
Create a pair of equations with different slopes.
Create a pair of lines that will always stay the same distance apart.
Create a pair of lines that intersect at only one point

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.

it would be d. henry moseley

hope this !

and sorry if i'm late. have a good rest of your day! : d

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