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Balancing equation in chemistry?

can someone please balancing these equation for me. My teacher gave me 50 problems and i can not figure these 10 out.

1)Ch4+O2-> CO2+H2O

2)Na+I2->NaI

3)N2+O2->N2O

4)N2+H2->NH3

5)KI+CI2->KCI+I2

6)Mg(NO3)2+K3PO4->Mg(PO4)2+KNO3

7)KCIO3->KCI+O2

8)HCI+Ca(OH)2->CaCI2+H2O

9)CaSO4+AIBr3->CABr2+Al(SO4)3

10)C2H6+O2->CO2+H2O

Please help!!!

3 Answers

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  • 1 decade ago
    Favorite Answer

    1)Ch4+2O2-> CO2+2H2O

    2)2Na+I2->2NaI

    3)N2+2O2->2N2O

    4)N2+3H2->2NH3

    5)2KI+CI2->2KCI+I2

    6)Mg(NO3)2+2K3PO4->Mg(PO4)2+6KNO3

    7)2KCIO3->2KCI+3O2

    8)2HCI+Ca(OH)2->CaCI2+2H2O

    9)CaSO4+AIBr3->CaBr2+Al(SO4)3

    10)2C2H6+7O2->4CO2+6H2O

  • 1 decade ago

    1.) Ch4+ 2 O2-> CO2+ 2 H2O

    2) 2 Na+I2-> 2 NaI

    3) 2 N2+O2-> 2 N2O

    4) N2+ 3 H2-> 2 NH3

    5) 2KI+CI2->2KCI+I2

    6) Mg(NO3)2+ K3PO4->Mg(PO4)2+KNO3( are you sure this is right? it's not balancing)

    7) 2 KCIO3-> 2 KCI+ 3 O2

    8) 2HCI+Ca(OH)2->CaCI2+2H2O

    9) CaSO4+AIBr3->CaBr2+ Al(SO4)3 ( can't balance)

    10) 2 C2H6+ 7O2-> 4 CO2+ 6 H2O

  • 1 decade ago

    wow were doing the same thing, now i won't give you the answers but i'll tell you how to do it lets see number 1 for instance

    CH4 + O2 = CO2 + H20

    H=4 H=2 put a 2 infront of the H

    C=1 c=1

    o=2 o=2

    and walla

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