Chemistry, 01.08.2019 02:30 jackfrost5
No ano 142 d. c. (depois de cristo), na grécia, o astrônomo cláudio ptolomeu propôs uma teoria que demonstrava que a terra estava parada e o sol, a lua e os outros planetas giravam ao seu redor. que nome recebeu essa teoria?
Answers: 1
Chemistry, 22.06.2019 03:30
Explain why pure hydrogen cyanide does not conduct electricity, but become a conductor when it is dissolved in water? (at room temp, pure hcn exists as a volatile liquid)
Answers: 1
Chemistry, 22.06.2019 06:00
An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have
Answers: 2
No ano 142 d. c. (depois de cristo), na grécia, o astrônomo cláudio ptolomeu propôs uma teoria que d...
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