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Chemistry, 21.06.2019 19:30
Si una estrella no tiene paralaje medible, ¿qué puedes inferir?
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Chemistry, 22.06.2019 11:00
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.
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Chemistry, 22.06.2019 12:00
What is the percentage of hydrogen in nitrogen trihydride
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