Ответ:
35-100%
x-40%
x=14
40. 14. xгр
H2SO4+(2NaOH)-Na2SO4+2H20 х=40×142÷98=20,28
98. 80. 142
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Ответ:
35-100%
x-40%
x=14
40. 14. xгр
H2SO4+(2NaOH)-Na2SO4+2H20 х=40×142÷98=20,28
98. 80. 142