How could the chemist improve the precision of her results, Chemistry

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How could the chemist improve the precision of her results

A forensic chemist is given a white solid that is suspected ofbeing pure cocaine (C₁₇H₂₁NO₄,molar mass = 303.35 g/mol). She dissolves 1.22 ± 0.01g ofthe solid in 15.60 ± 0.01g benzene. The freezing point islowered by 1.32 ± 0.04^oC.

a. What is the molar mass of the substance? Assuming that the percentage uncertainty in the calculated molar mass is the same asthe percent uncertainty in the temperature change, calculate the uncertainty in the molar mass.

b. Could the chemist unequivocally state that the substance iscocaine? For example, is the uncertainty small enough todistinguish from codeine(C₁₈H₂₁NO₃, molar mass = 299.36g/mol.)? Explain.

c. Assuming that the absolute uncertainties in the measurements of temperature and mass remain unchanged, how could the chemist improve the precision of her results?

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Chemistry: How could the chemist improve the precision of her results

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Chemistry: How could the chemist improve the precision of her results

Reference No:- TGS0836546

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