use the references to access important values if needed for this question.\na. how many moles of carbon…

use the references to access important values if needed for this question.\na. how many moles of carbon dioxide, co₂, are present in a sample that contains 8.34 moles of oxygen atoms?\nmol co₂\nb. how many moles of oxygen atoms are present in a sample that contains 4.57 moles of co₂?\nmol o

use the references to access important values if needed for this question.\na. how many moles of carbon dioxide, co₂, are present in a sample that contains 8.34 moles of oxygen atoms?\nmol co₂\nb. how many moles of oxygen atoms are present in a sample that contains 4.57 moles of co₂?\nmol o

Answer

Explanation:

Step1: Analyze the ratio in part a

In one - molecule of $CO_2$, there are 2 oxygen atoms. So the mole - ratio of $CO_2$ to $O$ is $n_{CO_2}:n_O = 1:2$.

Step2: Calculate moles of $CO_2$ in part a

Given $n_O=8.34$ mol. Using the ratio $n_{CO_2}=\frac{n_O}{2}$, we have $n_{CO_2}=\frac{8.34}{2}=4.17$ mol.

Step3: Analyze the ratio in part b

In one molecule of $CO_2$, there are 2 oxygen atoms. So the mole - ratio of $O$ to $CO_2$ is $n_O:n_{CO_2}=2:1$.

Step4: Calculate moles of $O$ in part b

Given $n_{CO_2} = 4.57$ mol. Using the ratio $n_O = 2\times n_{CO_2}$, we get $n_O=2\times4.57 = 9.14$ mol.

Answer:

a. $4.17$ b. $9.14$