What is the molar mass of AlCl3? A. 62.43 g/mol
B. 116.39 g/mol
C. 124.86 g/mol
D. 133.33 g/mol
E. 187.29 g/mol

133.33 g/mol

Explanation:

Molar mass:

Molar is the sum of all the atomic masses of the atoms of the elements present in a compound.

Molar mass of AlCl₃:

Atomic mass of Al = 26.98 amu

Atomic mass of chlorine = 35.45 amu

There are 3 atoms of chlorine present.

35.45×3 = 106.35

Molar mass of AlCl₃ = 26.98  + 106.35  = 133.33 g/mol

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

the volume increases