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дано

W(K)=0.3861  = 38.61%

W(N)=0.1386  = 13.86%

W(O)=0.4752 = 47.52%

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KxNyOz-?

KxNyOz = 38.61 / 39 : 13.86 / 14 : 47.52 / 16 = 1:1:3

KNO3

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