Question

How many moles of Cr are in 2.16 mol of Cr2O3?

Answer 1

When 1 mol of Cr2O3 has 2 mol of Cr, So we can easily get the number of moles of Cr in 2.16 mol of CrO3 by:
Cr → Cr2O3
2 mol→ 1 Mol
X → 2.16 Mol
So X (the no. of mol of Cr ) = 2 Mol * 2.16 Mol = 4.32 Mol

Answer 2

Answer:There are 4.32 moles of Cr in 2.16 moles of
`Cr_2O_3`.

Step-by-step explanation:

Moles of
`Cr_2O_3` = 2moles

In one molecule of
`Cr_2O_3` there are 2 atoms of Cr.

Then in 1 Mole of
`Cr_2O_3` contains = 2 moles of Cr

Number of moles of Cr in 2.16 moles of
`Cr_2O_3=2* 2.16 =4.32 moles` of Cr.

There are 4.32 moles of Cr in 2.16 moles of
`Cr_2O_3`.