A 2-column table with 3 rows. Column 1 is labeled Substance with entries upper O subscript 2, upper N subscript 2, upper C upper O subscript 2. Column 2 is labeled Molar mass with entries 32.00 grams per mole, 28.02 grams per mole, and, 44.02 grams per mole.
For each pair below, select the sample that contains the largest number of moles.
Pair A
2.50 g O2
2.50 g N2
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