 1830583 
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                                                1830583 
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                                                blvckbubblegum 
                                                22.12.2020 08:31
                                             knoposhka123 
                                                22.12.2020 08:31
                                                
                                                knoposhka123 
                                                22.12.2020 08:31
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                                                eklolosmile 
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                                                Amilina11 
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                                                ivettapopova045 
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                                             bogdannar2013 
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                                                bogdannar2013 
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                                             Sasha2280865 
                                                17.04.2019 05:00
                                                
                                                Sasha2280865 
                                                17.04.2019 05:00
                                             Qurin 
                                                17.04.2019 05:00
                                                
                                                Qurin 
                                                17.04.2019 05:00
                                            
m(Na2CO3)в р-ре =1060*0,02=21,2г;
m(Na2CO3) =14,3*0,37=5,291г;
m(Na2CO3)=21,2+5,291=26,491;
W(Na2CO3)=26,491/(1060+14,3)=0,025