Why do we use an object's mass, rather than its weight, to indicate the amount of matter it contains?

Mass is the amount of matter an object contains(density), where as weight is the measurement of gravity's affect on that object. ... For example a person weight more on Earth than on the Moon because Earth has higher mass, and thus higher gravitational pull. While mass is the amount of matter some body is made of.

Answerthe half-reaction having the greatest tendency to occur at the anode:     i₂(aq) + 2e⁻  ⇄ 2i⁻  ;   e = +0.53 v======oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be    i₂(aq) + 2e⁻  ⇄ 2i⁻    e = +0.53 vbecause its reduction potential is the lowest out of the three.

Reaction type : double replacement hcl + lioh = h2o + licl