Which of the following best defines one mole of a substance? (4 points) Mass, in grams, of each particle of the substance Mass, in grams, of the nucleus of the substance's atoms Amount of substance present in one atom of the substance Amount of substance present in Avogadro's number of particles of the substance

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering

Areaction in which products can react to re-form reactants is

Identify the correct mole ratio for each substance. sodium chloride (nacl) na: cl = 1: ammonium nitrate (nhno) h: o = 4: