Asample of al2o3 decomposed to pure aluminum and oxygen. after decomposition, 29.0 moles of al were recovered. how many moles of al2o3 were decomposed?

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

The movement of tectonic plates and in two locations is described below: location a: tectonic played push together location b: tectonic plates push apart

Explain how global warming could have affected yellowstone frog and salamander habitat's, resulting in changes in the populations of these species