name this compound  Mn2O7?
926004
Manganese Heptoxide or Manganese (VII) Oxide.  \n\nIts ionic components are most likely Mn7+ and O2-
389232
Please refer to :\nhttp://www.en.wikipedia.org/wiki/Manganese\nYou will get all the details you seek !
794274
B, though its even more common as K2Cr2O7\n\nby coincidence, C, Na and H2 happen to be quite good reducing agents.
284634
3K4Fe(CN)6 + 4FeCl3 -> 12KCl + Fe4[Fe(CN)6]3
138848
Here is one example ,\n\nAgNO3(aq) + NaCl(aq)-> AgCl(s)white precipitate + NaNO3(aq)
562872
Potassium manganate or potassium permanganate?  And I'm assuming a solution of iron(II).\n\nBeyond the corrosivity of the sulfuric acid, and the oxidizing capability of the manganese species, as well as its ability to stain EVERYTHING, there are no additional hazards.  Permanganate stains can be removed by addition of an hydroxylamine solution (either the sulfate or the chloride).
191934
Two in the first shell. 10 in the second shell. 10 in the third shell. 5 in the 4th shell for neutral Manganese. Mn 2+ is missing 2 electrons, so it would only have 3 in the outer shell. The rest will stay the same.\n\nHere's a cool interactive periodic table that may help you with your homework. \n\nhttp://www.webelements.com/\n\nYou can click on the the element you are interested in, then in the column on the left you can go to electronic properties and it will show you how the electrons are distributed. You can add or remove electrons to configure the electron arrangement of various ions of the substance you are interested in.
582466
1 goes in front of CO2.\n\nFe2O3 + CO ---> 2FeO + CO2\n\nAluminium chloride, AlCl3 because\nAl3+ --- group 3\nCl- --- group 7
727004
(NH4)2Cr2O7 -> Cr2O3 + 4*(H2O) + N2\n\n(NH4)2SO4 + 2*(NaOH) -> 2*(NH3) + 2*(H2O) + Na2SO4\n\nFe2(SO4)3 + 6*(NH3) + 6*(H2O) -> 2*(Fe(OH)3) + 3*((NH4)2SO4)
900769
Chemically it is MgSo4 or Magnesium Sulfate. I would ask for this or write it down and hope the other person has a minium education in chemistry ....
838145
tetrahedral: 4\ntrigonal bipyramidal:  5\noctahedral:  6\n\nChemistry joke:\n \nName the compound: Ba(Na)2\nAnswer: Banana\n\nHahahahahahaha!
771965
I can't tell you the name because i can't remember that stuff but the product will be K(NO3) PbI2\nif you're writing it in the long form it will be\n2KI + Pb(NO3)2 yeilds (arrow) 2K(NO3) + PbI2
179426
well i think \nCH3COOH -kmno4--> 2COOH\n         \nAS KMNO4 IS AN OXIDISING AGENT\ni hope so ask ur teach and plz mail me with a correct answer
18426
For KMnO4 there is no Oxidation number but for Mn it is 7
422969
AgNO3(aq)+2Na2S2O3(aq)--> [Ag(S2O3)2]3-(aq) + 4Na+(aq)+ NO3-(aq)
944583
a) [O 2-]\nb) [ I - ]\nc) [Na+]\nd) [Al 3+]\ne) [Ni 2+]\nf) [Mg 2+]
829125
I dont understand what you mean by "correcting certain formulas", but it appears Fe bears +1 oxidation state, if oxygen is -2. However, Fe does not bear such oxidation state, normally; it can bear 0, +2, +3, +4 and +6. With oxygen, what you will get, most likely, are FeO and Fe2O3. So, I would expect the the compound was a mixture of iron metal and one/several of these oxides. It appears that your compound could be 1:1 mixture of iron and iron(II) oxide.\n\nIf the question states that the compound was pure, check your calculation again; if you have done nothing wrong, the compound could be iron(II) peroxide [iron bears +2, oxygen bears -1]; it's not stable [I'm not sure whether it exists or not], or the strange iron(I) oxide [again, never seen this compound before, not sure it actually exists or not].