A pharmaceutical company has prepared a pure sample of a new chiral drug. To complete the characterization of the drug a technician prepares a sample for polarimeter analysis. A 16.357 g sample of the substance is dissolved in 100.0 mL of ethanol. When the sample is placed in a 50.0 mm polarimeter tube, it produces the rotation indicated below. What is the specific rotation of the new chiral drug

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

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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.