how many grams are in 1.30 x 10^23 atoms of C3H7O
Avogadro's Constant: 6.022×10236.022 × 10^{23}6.022×1023 atoms = 1 mole of atoms.
Grams = 1.30×10236.022×1023=0.215g\frac{1.30×10^{23}}{6.022×10^{23}}=0.215g6.022×10231.30×1023=0.215g
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