Question

What is the mass of oxygen in a `233.0*g` mass of carbon dioxide?

Answer 1

`"Mass of oxygen"-=170*g`.

Explanation:

We calculate the molar quantity of carbon dioxide is........

`(233*g)/(44.0*g*mol^-1)=5.30*mol`

Now, clearly, if there are `5.30*mol` `CO_2`, there are `10.6*mol` `"oxygen atoms"`. Do you agree?

And thus mass of oxygen `-=` `10.6*molxx16.0*g*mol^-1=??g`.