Solid nickel is added to aqueous iron nitrate. Using the metal activity series, which chemical equation reflects this reaction and its outcome? Question 5 options: A) 3Ni(NO3)2 (aq) + 2Fe (s) → NR B) Ni (s) + Fe(NO3)3 (aq) → NR C) 3Ni(NO3)2 (aq) + 2Fe (s) → 3Ni (s) + 2Fe(NO3)3 (aq) D) 3Ni (s) + 2Fe(NO3)3 (aq) → 3Ni(NO3)2 (aq) + 2Fe (s)

Which element is least likely to undergo a chemical reaction

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)

Which is true according to the law of conservation of energy