A metal chloride contains of chlorine by weight. vapours at STP weigh . The molecular formula of the metal chloride is: (At. mass Cl )

Question

A metal chloride contains  of chlorine by weight.  vapours at STP weigh . The molecular formula of the metal chloride is: (At. mass Cl )

Canvas Classes · Accepted Answer

Strategy:
 Use the vapour density to find the molar mass (). Then, the number of Chlorine atoms follows from the mass percentage ().

Step 1: Calculate Molar Mass

Step 2: Calculate number of Cl atoms
Mass of Cl per mole .
Atoms .
Formula: .

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