What is ther coefficient for `H^(+)` when the half equation is balanced with the smallest whole number coefficients?

Ethanol reacts with dichromate ion in acid solution according to the equation: C_(2)H_(5)OH(l)+Cr_(2)O_(7)^(2-)(aq)+H^(+)(aq)rarrCO_(2)(g)+Cr^(3+)(aq)+H_(2)O(l) What is the coefficient for H^(+)(aq) when this equation is balanced with the smallest whole number coefficients?

The smallest whole number is

What is the coefficient for Zn when the equation below is balanced with the smallest whole number coefficient? Zn+H^(+)(aq)+NO_(3)^(-)(aq)rarrZn^(2+)(aq)+N_(2)O(g)+H_(2)O(l)

Write the smallest whole number.

Cl_(2)+OH^(-)rarrCl^(-)+ClO_(3)^(-) What is the coefficient for OH^(-) when this equation is balanced with the smallest interger coefficients ?

Cl_(2)+OH^(-)rarrCl^(-)+ClO_(3)^(-) What is the coefficient for OH^(-) when this equation is balanced with the smallest interger coefficients ?

1 is the smallest whole number.

What is the coefficients of I_(2) (s) when the reaction below is balanced with smallest whole number coefficients? ____ Cr_2O_(7)^(2-)(aq)+"____" .^(-)(aq)+"____"H^(+)(aq)to"_____"I_(2)(s)+"___"Cr^(3+)(aq)+"___"H_(2)O(l)