Question

A metal (M) forms a compound with the formula MCl3. If the compound contains 65.57% Cl by mass, what is the identity of the metal?

Answer 1

aluminium

Step-by-step explanation:

You have a compound MCl3, and it contains 65.57% chlorine (Cl) by mass. This means the remaining mass (100% - 65.57% = 34.43%) is contributed by the metal (M).

To find the identity of the metal (M), you need to look for an element whose molar mass corresponds to 34.43% of the molar mass of MCl3. The metal is likely aluminium