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Stoichiometric Calculations

what is the w...

Question

what is the weight of 4 grams atoms of nitrogen ?

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Solution

Nitrogen exist as molecule N₂, whose molecular mass is 28 g.
28 g of Nitrogen contains 2 g-atoms of Nitrogen.
Therefore 4 g atoms of Nitrogen will weigh = (2x28)/4 = 56 g.

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