(1) They are generally insoluble in water, and dissolve in nonpolar solvents.

(2) The sneaky truth was that Loyd's puzzle was insoluble - something that contemporaneous mathematicians soon proved.

(3) When calcium and magnesium ions in the filtrate combine with phosphate radicals, either soluble or insoluble salts will form.

(4) The prime minister faces a seemingly insoluble dilemma.

(5) Because these vitamins are insoluble in water, they tend not to be lost in cooking.

(6) Important pigments include inorganic oxides and insoluble salts, which are mechanically mixed in a coating material.

(7) But therein lay a seemingly insoluble dilemma: that way - the only way - did not seem a possible way.

(8) The exact figures for wines vary slightly according to grape variety and region, but experience shows that about a half of the tartrate soluble in grape juice is insoluble in wine.

(9) The resulting calcium carbonate is quite insoluble in water and sinks to the bottom.

(10) The gums are insoluble in alcohol while the resins or oleo-resins will pass completely into solution.

(11) He promises that there are no insoluble puzzles in the story - if you pay attention, Primer eventually gives up all its ghosts.

(12) There is a dilemma here, but it is not insoluble .

(13) Biological molecules that are insoluble in aqueous solutions and soluble in organic solvents are classified as lipids.

(14) There is no insoluble and eternal waste problem as with nuclear power.

(15) The most immediate priorities facing her on the arts front are either insoluble or politically weighted.

(16) His married life was dominated by an insoluble dilemma.

(17) The calcite is an insoluble mineral, which upon death of the organisms sinks to the floor of the body of water and accumulates in the sediment.

(18) The reaction of calcium ions with oxalic acid produces an insoluble solid, calcium oxalate.

(19) Bilirubin is difficult to excrete because internal hydrogen bonding makes it almost completely insoluble in water.

(20) Often it seems that Africa's problems are insoluble .