Consider the balanced chemical equation,

mgcl2(aq) + 2agf(aq) → 2agcl(s) + mgf2(aq)

if both reactants are completely consumed and we produce 20 formula units of agcl, how many ions of mg and f did we start with?

a) 10 ions of mg and 20 ions of f

b) 10 ions of mg and 10 ions of f

c) 20 ions of mg and 10 ions of f

d) 20 ions of mg and 20 ions of f

Nitric acid can be formed in two steps from the atmospheric gases nitrogen and oxygen, plus hydrogen prepared by reforming natural gas. in the first step, nitrogen and hydrogen react to form ammonia: (g) (g) (g) in the second step, ammonia and oxygen react to form nitric acid and water: (g) (g) (g) (g) calculate the net change in enthalpy for the formation of one mole of nitric acid from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .