What is the standard cell potential of a cell made of theoretical metals Ma/Ma^2+ if the reduction potentials are -0.19 V and -0.85 V, respectively?

a) +0.66 V
b) -0.66 V
c) +1.04 V
d) -1.04 V

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.