Question

FeS + O2  = Fe(II).... +  S(IV)....                                             H2Se  +   O2   =  Se (IV)....   +   .........                                           MgS   +   O2    =  Mg....    +    S(IV).....                                           CS2    +    O2   = C(IV)....  +    S(IV).... СРОЧНО

Answer 1

FeS + O2 = FeO + SO2

H2Se + O2 = SeO2 + H2O

MgS + O2 = MgO + SO2

CS2 + O2 = CO2 + SO2

Answer 2

It seems like you want to balance chemical equations for various reactions involving different compounds. I'll help you balance these equations:

1. FeS + O2 → Fe(II) + S(IV): To balance this equation, you need to ensure that the number of each type of atom is the same on both sides.

   FeS + O2 → FeO + SO2

2. H2Se + O2 → Se(IV) + ??? It appears that you haven't provided the product on the right-hand side of this equation. To balance it, I would need to know the product.

3. MgS + O2 → Mg + S(IV): To balance this equation:

   MgS + O2 → MgO + SO2

4. CS2 + O2 → C(IV) + S(IV): To balance this equation:

   CS2 + 3O2 → CO2 + 2SO2

Please provide the missing product for the second equation so I can balance it for you.