Answer:
[tex]\large \boxed{4.1\times 10^{24}}[/tex]
Explanation:
There are 6.022 × 10²³ molecules in 1 mol of CO
[tex]\text{No. of molecules} = \text{6.8 mol CO} \times \dfrac{6.022\times 10^{23} \text{ molecules CO}}{\text{1 mol CO}}\\\\= \mathbf{4.1\times 10^{24}}\textbf{ molecules CO}\\\\\text{There are $\large \boxed{\mathbf{4.1\times 10^{24}}\textbf{ molecules}}$ in 6.8 mol of CO}[/tex]
