Ethylene glycol is a commonly used car antifreeze agent. Calculate the minimum amount of ethylene glycol that must be added to 3 kg of pure water in order to prevent freezing of the mixture for temperatures down to 244.3 K. Also calculate the boiling point of this mixture. The molar heat of melting of ice is 6.01 kJ/mol, and the molar heat of vaporization of water is 40.65 kJ/mol.

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he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

the answer is barium and copper bromide