What is the number of moles in each of the following? 6 x 1022 ions of sodium chloride
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What is the number of moles in each of the
following? 6×1022 ions of sodium chloride
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Molecular mass H2O = (2 x atomic mass of H) + atomic mass of O
= 2(1.008 amu) + 16.00 amu = 18.02 amu
• So, one mole of water (6.022 x 10 23 molecules) has a mass of 18.02 g.
• Molar mass of NaCl = atomic mass of Na (22.99 amu) +
the atomic mass of Cl (35.45 amu) 22.99 + 35.45 = 58.44 amu
• One mol of NaCl (6.02 x1023 formulas) has a mass of 58.44 g.
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