A Chemist Is Given a White Solid That Is Suspected

question 65

Essay

A chemist is given a white solid that is suspected of being pure cocaine.When 1.22 g of the solid is dissolved in 15.60 g of benzene,the freezing point is lowered by 1.32°C.Calculate the molar mass of the solid.The molal freezing point constant (K_f)for benzene is 5.12°C/m.

---

Definitions:

Fraudulent Alteration

The unauthorized modification of a document with the intention to deceive for personal gain or to harm another party.

Liabilities

Financial or legal obligations that an entity is required to pay or resolve in the future.

Promissory Note

A written promise to pay a specified sum of money to a designated party on demand or at a fixed or determinable future time.

Fictitious-Payee Rule

A legal principle that protects banks from liability when funds are withdrawn by a person not entitled to them, if the drawer's negligence contributed to the forgery.