Дано v(ch3-ch2-coh) = 4.48 l m(ch3-ch2- 4.48 xg ch3-ch2-coh+ag2o--> ch3-ch2-cooh+2ag 22.4 74 vm = 22.4 l/mol , m(c3h6o2) = 74 g/mol x = 4.48*74 / 22.4 = 14.8 g ответ 14.8 г
Zladthesecond577
08.08.2022
Дано m(na2co3) = 20 g v( 20 x 2hno3+na2co3--> 2nano3+h2o+co2 106 22.4 m(na2co3) = 106 g/mol , vm=22.4 l/mol x = 20*22.4 / 106 = 4.23 l ответ 4.23 л