Most of the alkali metal salts are soluble in water while many alkaline earth salts have very low solubilities. why is this so? a. the alkali metal cations are smaller than the alkaline earth cations and are more easily hydrated. b. the alkali metals have lower ionization energies than alkaline earth elements. c. the alkaline earth salts have much greater lattice energies than the alkali metal salts. d. the alkaline earth metals have greater heats of atomization than the alkali metals. e. none of the above

Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.