Who wants to talk and have fun

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

After swimming for hours he was tired what is the personal pronoun in the sentence below

Barbara allen is hard on sir john because she thinks a. he is a drunkard b. he has treated he badly c. he is just trying to get attention d. it will him get over her