Объяснение:
w(Na2S)= m(Na2S)/m(розчинy) = m(Na2S)/(m(розч.Na2S)+m(H2O)
w(Na2S)= (385•014)/(385+160)= 53.9/545 = 0.099 ( 9.9%)
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Объяснение:
w(Na2S)= m(Na2S)/m(розчинy) = m(Na2S)/(m(розч.Na2S)+m(H2O)
w(Na2S)= (385•014)/(385+160)= 53.9/545 = 0.099 ( 9.9%)