PLEASE HELP URGENT 1. at how much energy is required to melt a 30.0-gram sample of water at its melting point?

2. at 1 atmosphere of pressure, 20.0 g of a compound at its normal boiling point are converted to a gas by the addition of 23,000 joules. what is the heat of vaporization for the compound in J/g?

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".

i belive it is water