Question

Find the total number of moles of electrons present in $24.088\times {10}^{23}S{O}_2$ molecules.

• A. 132 moles
• B. 128 moles
• C. 232 moles
• D. 328 moles

Answer 1

The correct option is B 128 moles

$24.088\times {10}^{23}S{O}_2$ molecules $=\frac{24.088\times {10}^{23}}{6.022\times {10}^{23}}$ moles = 4 moles of $S{O}_2$
The number of electrons in one molecule of $S{O}_2=16+(8\times 2)=32$ electrons.
So, the number of moles of electrons in one mole of $S{O}_2=32$ moles
Therefore, the total number of moles of electrons in 4 moles of $S{O}_2=$ 128 moles