Question 8 A aay 4.9times 10^-24 C 18.0times 10^23

To find the number of molecules in 8 moles, we can use Avogadro's number, which is \(6.022 \times 10^{23}\) molecules per mole.<br /><br />The calculation is as follows:<br /><br />\[ \text{Number of molecules} = \text{Number of moles} \times \text{Avogadro's number} \]<br /><br />\[ \text{Number of molecules} = 8 \, \text{moles} \times 6.022 \times 10^{23} \, \text{molecules/mole} \]<br /><br />\[ \text{Number of molecules} = 48.176 \times 10^{23} \, \text{molecules} \]<br /><br />So, the correct answer is:<br /><br />C. \(48.176 \times 10^{23}\) molecules