If you have 1.0 mol of each of the following compounds, which will have the greatest
mass?
oh3po4
o ni3
o fecl3
okci

NI3 has the highest molar mass = 394.707 grams

Explanation:

1 mole of each substance contain mass which is equal to molar mass of the substance .

Molar mass is calculated in the same way the molecular mass is calculated.

The Molar mass id expressed in grams.

Molecular mass = Mass of the atom x the number of atoms

Atomic mass of H = 1.00 amu

O = 15.99 amu

P = 30.97 amu

= 3(Mass of H) + 1(Mass of P) + 4(Mass of O)

= 3(1)+ 1(30.97) + 4(15.99)

= 3 + 30.97 + 63.96

= 97.93 gram

= 1 (mass of N) + 3(mass of I)

= 1(14.0067)+3(126.9)

= 394.7067 grams

= 1(atomic mass of Fe) + 3(atomic mass of Cl)

= 1(55.845)+3(35.45)

=  55.845 + 106.35

= 162.195 grams

KCl = 1(mass of K) + 1(mass of Cl)

= 1(39.09) + 35.45

= 74.54 gram

Out of these NI3 has the highest molar mass = 394.707 grams

samuel de champlain. in 1608, king henry iv sponsored pierre dugua, sieur de mons and samuel de champlain as founders of the city of quebec with 28 men. this was the second permanent french settlement in the colony of canada.