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OpenStudy (anonymous):
How many atoms are in a sample of 175 grams of sodium (Na)?
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OpenStudy (abb0t):
\(175~grams~Na^+ \times \frac{1~mol~Na^+}{molar~mass~Na^+}\) now, divide by avogadro's number, which is \(6.022 \times 10^{23} \large \frac{atoms}{mol}\)
OpenStudy (unklerhaukus):
the molar mass of sodium is about 23 grams
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