Question 64 Say some gasoline contains 0.01mols of benzene, and 0.49 mols of eve

Question

Question 64

Say some gasoline contains 0.01mols of benzene, and 0.49 mols of everything else, for a total of 0.50 mols. Say the vapor pressure of pure benzene at the temperature of interest is 0.1 atm. What is the gas phase pressure of benzene above the gasoline in Torr? The solubility of pure liquid benzene in water is 1780 mg/L at 25 C. For the same gasoline as from the above problem, what is the concentration of benzene in water that comes into contact with the gasoline? Have endocrine active chemicals in the environment have been observed to be mainly a) feminizing? or b) masculinizing? or c) both? and, what is the main evidence that has been observed? What is the main feature of endocrine glands that distinguishes them from exocrine glands? List THREE ways that a chemical can act as an "endocrine disrupter". What are two chemicals or chemical types definitely found in water from sewage treatment plants that are 2 pts endocrine active? What are two chemicals or chemical types that are used in society that may be endocrine active?

Explanation / Answer

Endocrine active substances are those which can interact or interfere with normal hormonal action.

Bisphenol-A, octylphenol, nonylphenol these are some endocrine active chemicals found in sewage treatment plants

DDT (dichlorodiphenyltrichloroethane), Polychlorinated biphenyls, Polybrominated diphenyl ethers (PBDEs), Phthalates etc are chemical or chemical types which are still used in society and are endocrine active.

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