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Which Is a Correct Method for Determining the Total Number

Question 4

Multiple Choice

Which is a correct method for determining the total number of atoms in 123 grams of sulfur trioxide (SO₃) ?

A) $123 \mathrm{~g} \mathrm{~SO}_{3}\left(\frac{1 \mathrm{~mol}}{80.07 \mathrm{~g}}\right) \left(\frac{1 \text { atom }}{6.022 \times 10^{23} \mathrm{~mol}}\right)$
B) $123 \mathrm{~g} \mathrm{~SO}_{3}\left(\frac{1 \mathrm{~mol}}{80.07 \mathrm{~g}}\right) \left(\frac{6.022 \times 10^{23} \text { atoms }}{1 \mathrm{~mol}}\right)$
C) $123 \mathrm{~g} \mathrm{~SO}_{3}\left(\frac{1 \mathrm{~mol}}{80.07 \mathrm{~g}}\right) \left(\frac{1 \mathrm{~mol} \mathrm{atoms}}{4 \mathrm{~mol} \mathrm{~SO}_{3}}\right) \left(\frac{6.022 \times 10^{23} \text { atoms }}{1 \mathrm{~mol}}\right)$
D) $123 \mathrm{~g} \mathrm{~SO}_{3}\left(\frac{1 \mathrm{~mol}}{80.07 \mathrm{~g}}\right) \left(\frac{4 \mathrm{~mol} \text { atoms }}{1 \mathrm{~mol} \mathrm{SO}_{3}}\right) \left(\frac{1 \text { atom }}{6.022 \times 10^{23} \mathrm{~mol}}\right)$
E) $123 \mathrm{~g} \mathrm{~SO}_{3}\left(\frac{1 \mathrm{~mol}}{80.07 \mathrm{~g}}\right) \left(\frac{4 \mathrm{~mol} \mathrm{atoms}}{1 \mathrm{~mol} \mathrm{SO}_{3}}\right) \left(\frac{6.022 \times 10^{23} \text { atoms }}{1 \mathrm{~mol}}\right)$