Answer : The chemical formula for the given compound is [tex]CrO_3[/tex]
Explanation : Given,
Moles of oxygen = 8.00 mole
Moles of chromium = 2.67 mole
To formulate the chemical formula, we need to follow some steps:
Step 1: Calculating the mole ratio of the given elements.
For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 2.67 moles.
For Oxygen = [tex]\frac{8.00}{2.67}=2.99\approx 3[/tex]
For Chromium = [tex]\frac{2.67}{2.67}=1[/tex]
Step 2: Taking the mole ratio as their subscripts.
The ratio of Cr : O = 1 : 3
Hence, the chemical formula for the given compound is [tex]Cr_1O_3=CrO_3[/tex]
