In the following reaction, how many grams of ferrous sulfide (fes) will produce
0.56 grams of iron (iii) oxide (fe2o3)?
4fes + 7o2 → 2fe2o3 + 4so2
the molar mass of ferrous sulfide is 87.92 grams and that of iron (iii) oxide is 159.7 grams.

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?