Question

Question #da40d

Answer 1

`1.0234×10^24`

Explanation:

Recall that one mol of any compound is made up of approx. `6.02times 10^23` units of this compound. In this case, that unit would be molecules. Then 0.85 mol is...

Number of molecules of CO in 0.85 mol `= 0.85*6.02times10^23 approx 5.117*10^23`

However...this is the number of molecules, not atoms. The chemical formula for carbon monoxide is CO, so each molecule has one carbon and one oxygen atom. Then there are two atoms per molecule, so we double our number of molecules to find the number of atoms...

`->5.117×10^23×2=1.0234×10^24`