Answer to Question #154610 in General Chemistry for rrrr

Question

if a mcl3 is 67.2% metal identify m. compute its atomic mass

Answer 1

Аt 218g/mol

f 67.2% is the mass fraction of metal in the compound, then the mass fraction of 3Cl is 32.8.

Then, if 32.8% is 106.5 g / mol, then 67.2% is 218 g / mol.

An element with a molar mass of 218g/mol and an oxidation state of +3 is an isotope of astatine At ²¹⁸