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posted by Dana on Tuesday, April 3, 2012 at 8:35am.
How many sodium ions are present in 825 ml of 0.825 M Na2SO4?
1L of 1M solution contains 1 mole .825L of .825M contains .68 moles of Na2SO4 Each mole contains 2 Na ions 2*.68 * 6.02*10^23 = 8.2 * 10^23 Na ions
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