How many atoms of oxygen atoms are in this formula?, 3, 1, 2, How many elements are in magnesium sulfate (MgSO4)?, 4, 3, 1, 2, What is the total amount of Na atoms found in sodium chloride (NaCl)?, 1, 2, 3, 4, How many molecules is this?, 1, 2, 3, How many different elements are in this formula?, 2, 3, 6, How many molecules of this compound are there?, 1, 3, 6, How many sulfur atoms are in this compound?, 1, 2, 3, 4, How many atoms of C? , 2, 1, 3, 4, How many hydrogen atoms are in sugar?, 1, 6, 12.

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