Chemistry Support Group

[Ate Shey]

kung si Akon bahala sa physics ako naman ang bahala sa Chemistry heheheh.. Medyo expert ako sa inorganic chemistry..

[cute_poporing]

may reviewer ka for chemistry?

[Ate Shey]

may reviewer ka for chemistry?

i do not have one today but i can answer your questions about Chemistry..

[trojanHOrse]

pa help naman po d2:

 9. Iron metal can easily be produced by the reaction of Fe3O4(s) with solid aluminum. A by-product
of the reaction is aluminum oxide. The moles of Fe(s) produced if 4.0 moles of Al(s) reacts are
a. 1.5 mol
b. 3.6 mol
c. 4.0 mol
d. 4.5 mol
teth: 10. A student weighed a candle (C25H52(s)), burned it for ten minutes at SATP, and then reweighed it.
The mass of the candle burning was 27.93 g while the mass after burning was 25.76 g. If the
balanced equation is
C25H52(s)+ 38 O2(g) => 25 CO2(g)+ 26 H2O(g).
The predicted volume of CO2(g) produced is
a. 1.80 L
b. 3.44 L
c. 3.81 L
d. 6.77 L

[Ate Shey]

pa help naman po d2:

 9. Iron metal can easily be produced by the reaction of Fe3O4(s) with solid aluminum. A by-product
of the reaction is aluminum oxide. The moles of Fe(s) produced if 4.0 moles of Al(s) reacts are
a. 1.5 mol
b. 3.6 mol
c. 4.0 mol
d. 4.5 mol

Fe2O3 + 2Al → 2Fe + Al2O3 + heat   - classic thermite reaction

kung 4 moles that would be

2 Fe2O3 + 4Al → 4Fe + 2 Al2O3 + heat

Answer: D. 4 Moles of Iron