Barium Chloride + Chromium: does this equation react?

In which direction will the following reaction go if the standard reduction potentials are 0.80 v for ag/ag+ and –0.44 v for fe/fe2+? ag+ + fe → ag + fe2+ a.)forward b.)the reaction cannot occur. c.) not enough information is given. d.) reverse

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Which material burns faster? metal aluminum