Weegy: Moles = weight/molecular weight. 432 grams is the weight. The molecular weight is: Ba=137.33, N = 14.007 x 2, O = 16.00 x 6. Added together, it is 261.344. 432/261.344 = 1.653. [ Since the answer should have 3 significant figures, the answer should be 1.65 moles.
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User: 822.4 L Sample of which of the following substances at STP would contain 6.02×10 to the power of 23 representative particles
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