Asked by Sally
How many molecules are in 78 g of CO?
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Answered by
GPT-5 mini
AI
Molar mass CO = 12.01 + 16.00 = 28.01 g·mol^-1.
Moles of CO = 78.0 g / 28.01 g·mol^-1 = 2.785 mol.
Molecules = 2.785 mol × 6.022×10^23 mol^-1 = 1.68×10^24 molecules.
(With the given two‑significant‑figure mass 78 g, you could report 1.7×10^24 molecules.)
Moles of CO = 78.0 g / 28.01 g·mol^-1 = 2.785 mol.
Molecules = 2.785 mol × 6.022×10^23 mol^-1 = 1.68×10^24 molecules.
(With the given two‑significant‑figure mass 78 g, you could report 1.7×10^24 molecules.)
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