Robert is testing two objects. Each object is composed of a single element unknown to Robert. Which of the following procedures could Robert SAFELY use to identify these elements. -He could measure the objects mass and volume in order to calculate each objects' density. Then, compare his densities to a elemental density chart.

-He could light each element on fire to see if they have flammability properties.

-He could drop each object off a building and see if they break, and or how they break.

-He could guess what element each object is made of.

The gas would begin to expand, and eventually the can would burst or explode.

To present informationto make information easily available 

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.

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