Three structural isomers have the formula C5H12 . Draw the three different isomers according to the number of carbon atoms in their main chain. Be sure to draw all hydrogens.

If a || b and e || f, what is the value of y ?

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2