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World Languages, 24.06.2019 21:40
Em um acidente, um caminhão carregado de solução aquosa de ácido fosfórico (h3po4) tombou, derramando cerca de 24,5 toneladas dessa solução no asfalto. quantas toneladas de óxido de cálcio (cao) seriam necessárias para reagir totalmente com essa quantidade de ácido? 2 h3po4 + 3 cao → ca3(po4)2 + 3 h2o a. 14t b. 29t c. 42t d. 7t e. 21t
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World Languages, 26.06.2019 07:40
Ecoul il mana catre pestera purpurie dintre dealuri,trezind din vise pastratori adormiti. pluti apoi printre trestiile raului,si trestiile ii dusera solia catre apele marii." (oscar wilde,printul fericit) •analizeaza atributele adjectivale si substantivale si enuntul urmator,completand tabelul dat: |tipuri de atribut| |partea de vorbire| |cazul| multumesc,anticipat.
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