Question

Can someone help me balance these chemical equations?

____H3BO3 ---> ____H4B6O11


___C3H8 + ___O2 ---> CO2 + ____H2O


____Fe2O3 + ___CO ---> ___Fe + ____CO2

_____H2 + ___ O2 ---> ____H2HO

____PCl5 + ____H2O --> ___HCl + ____H3PO4

____Zn + ____ HCl ---> ____ZnCl2 + ___H2

Answer 1

_6__H3BO3 ---> __1__H4B6O11 + 7 H2O

__1_C3H8 + _5__O2 ---> 3 CO2 + __4__H2O

____Fe2O3 + __3_CO ---> _2__Fe + __3__CO2

___3__H2 + __1_ O2 ---> __2__H2HO

__1__PCl5 + __4__H2O --> _5__HCl + __1__H3PO4

__1__Zn + __2__ HCl ---> __1__ZnCl2 + _1__H2