Question

What is the percent of Cr in Cr2O3

Answer 1

68.41

Step-by-step explanation:

Answer 2

The percentage of Chromium in Chromium Oxide is calculated as follow,

Step 1:
Calculate Molar mass of Cr₂O₃,
Cr = 51.99 u
O = 16 u
So,
2(51.99) + 3(16) = 103.98 + 48 = 151.98 u

Step 2:
Secondly divide molar mass of only chromium with total mass of Cr₂O₃ and multiply with 100.
i.e.
=
`(103.98)/(151.98)` × 100

= 68.41 %
So, the %age composition of chromium in chromium oxide is 68.41 %.