If 3.50 moles of sulfur reacts with iron metal to produce iron
(III) sulfide, how many moles of
Fe are needed?

the atomic mass is the bottom number on the element.

-steel jelly

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?