Which physical property is being used to separate the mixtures in each of the following cases? a) a magnet is used to separate iron filings from sand. b) fat is skimmed off the top of a sauce. c)a sample of ocean water boiled until only salt remains.

This image is an example of a(n) a) atom. b) compound. c) mixture. d) molecule.

Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?