In one of your trials you placed 5.5 grams of salt in 10 ml of water. Use this information to answer the following questions.
a. What is the w/w%?
b. What is the w/v%
c. How many moles of NH4Cl are used? Remember, moles = mass/molar mass
d. Using the moles from 4c find the molarity.

Sorry i don’t know answer to this

The phase where ice changes directly to gas is called sublimation 

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.