Indicate what error (small, large, or none) is introdu
what error (small, large, or none) is introduced into the percent iron in the unknown
and explain briefly why in each case.
a. if the permanganate solution contains some contaminant.
b. if h2so4 is not added to the solution.
c. if some iron unknown is spilled after weighing, but before titrating with kmno.

Which statement describes james chadwick’s discovery.

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.