Calculate the mass of phosphorus (V) oxide formed by burning 0.4 mol of phosphorus.

Given:
n (P) = 0.4 mol
To find:
m (P2O5)
Decision:
m (P2O5) = n * M = 0.4 mol * 142 g / mol = 56.8 g
Answer: the mass of phosphorus (V) oxide is 56.8 g.



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