Calculate the number of milliliters of 0.591 M Ba(OH)2 required to precipitate all of the Fe 3 ions in 190 mL of 0.511 M FeBr3 solution as Fe(OH)3. The equation for the reaction is: 2FeBr3(aq) 3Ba(OH)2(aq) 2Fe(OH)3(s) 3BaBr2(aq) mL Ba(OH)2

Cr(oh)3 -> cr(3+) + 3oh-

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

16- counting by fours

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf