Problem: Determine the chemical formula of each of the following compounds and then use it to calculate the mass percent composition of each constituent element.cobalt(II) bromide

FREE Expert Solution

From the name cobalt (II) bromide, 

  • we have bromine as the anion with a charge of -1, Br-.
  • we have cobalt, transition metal as the cation; based on the given name, it has a charge of +2, Co2+.

The chemical formula is:

Step 1. Compute for the mass of each element for every 100 sample.

mass Co=100 g CoBr2 (1 mol CoBr2218.74 g CoBr2)(1 mol Co1 mol CoBr2)(58.93 g Co1 mol Co)=26.94 g Co

mass Br=100 g CoBr2(1 mol CoBr2218.74 g CoBr2)(2 mol Br1 mol CoBr2)(79.904 g Br1 mol Br)=73.06 g Br

Step 2. Calculate percent composition.

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Problem Details

Determine the chemical formula of each of the following compounds and then use it to calculate the mass percent composition of each constituent element.

cobalt(II) bromide

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