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Portable Network Graphic  |  1990-06-19  |  3KB  |  456x278  |  1-bit (2 colors)

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OCR: How many moles of water molecules in 72 gms of pure water (H20) ? 1 4.0 moles H 1.007 The periodic table shows that one mole 80 of H20 has a mass of about 18.0gms. 15.999 Moles H20 = 72 gms/18.0gms/mol 18.0gms 0.4.0 moles

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