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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
Answers: 2
World Languages, 25.06.2019 06:30
What would be the mass of an atom with 8 protons and 8 neutrons? a) 16 amu b) 8 amu c) 64 amu
Answers: 1
World Languages, 27.06.2019 06:30
How do u ask a person what nationality someone is in spanish and german
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World Languages, 27.06.2019 09:00
Choose the answer that best completes the sentence. at midnight, the little men came skipping in and were about to set to work on the leather; instead of the leather ready to cut out, they found the charming little clothes.
Answers: 1
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