May someone elp me pls
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World Languages, 24.06.2019 21:40, genyjoannerubiera
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, 25.06.2019 06:30, jonathanmagana112002
Identify the structure of the human heart which is a muscular chamber that pumps blood out of the heart and into the circulatory system.
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