Which formula equation represents the burning of sulfur to produce sulfur dioxide?
O S(s) + O2(9) A, 502(9)
O 2H2S(s) + 302(0) — 2H2011) +2502(9)
O 4FeS2 + 1102— 2Fe2O3 + 8502
O 2502(g) + O2(g) _V205, 2503(9)

Rank substituents in order of their priority when assigning the e or z label to an alkene. i, ch2i , h, ch2ch2cl, f

Which of the four hypothetical substances you investigated would be most harmful to living organisms? 50 points!

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o