w(P) = 31 * 2 / 142 = 0,43 * 100% = 43 %
w(O) = 16*5/142= 0.56*100% = 56 %
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w(P) = 31 * 2 / 142 = 0,43 * 100% = 43 %
w(O) = 16*5/142= 0.56*100% = 56 %
кислорода = 56,33%